linux.git
3 years agoMerge tag 'drm-misc-next-2021-09-23' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 24 Sep 2021 03:48:48 +0000 (13:48 +1000)]
Merge tag 'drm-misc-next-2021-09-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.15:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:

Driver Changes:
  - Conversions to dev_err_probe() helper
  - rockchip: Various build improvements, Use
    DRM_BRIDGE_ATTACH_NO_CONNECTOR for LVDS and RGB
  - panel: New panel-edp driver

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210923074522.zaja7mzxeimxf6g3@gilmour
3 years agodrm: Fix scaling_mode docs
Ville Syrjälä [Wed, 15 Sep 2021 14:23:00 +0000 (17:23 +0300)]
drm: Fix scaling_mode docs

Fix the bad copy-pasta in the scaling_mode docs.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210915142300.15631-1-ville.syrjala@linux.intel.com
Reviewed-by: Simon Ser <contact@emersion.fr>
3 years agodrm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c
Maxime Ripard [Fri, 17 Sep 2021 18:09:25 +0000 (20:09 +0200)]
drm/bridge: Move devm_drm_of_get_bridge to bridge/panel.c

By depending on devm_drm_panel_bridge_add(), devm_drm_of_get_bridge()
introduces a circular dependency between the modules drm (where
devm_drm_of_get_bridge() ends up) and drm_kms_helper (where
devm_drm_panel_bridge_add() is).

Fix this by moving devm_drm_of_get_bridge() to bridge/panel.c and thus
drm_kms_helper.

Fixes: 87ea95808d53 ("drm/bridge: Add a function to abstract away panels")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210917180925.2602266-1-maxime@cerno.tech
3 years agoMerge tag 'drm-misc-next-2021-09-16' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Wed, 22 Sep 2021 05:30:38 +0000 (15:30 +1000)]
Merge tag 'drm-misc-next-2021-09-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for $kernel-version:

UAPI Changes:

Cross-subsystem Changes:
  - dma-buf: Avoid a warning with some allocations, Remove
    DMA_FENCE_TRACE macros

Core Changes:
  - bridge: New helper to git rid of panels in drivers
  - fence: Improve dma_fence_add_callback documentation, Improve
    dma_fence_ops->wait documentation
  - ioctl: Unexport drm_ioctl_permit
  - lease: Documentation improvements
  - fourcc: Add new macro to determine the modifier vendor
  - quirks: Add the Steam Deck, Chuwi HiBook, Chuwi Hi10 Pro, Samsung
    Galaxy Book 10.6, KD Kurio Smart C15200 2-in-1, Lenovo Ideapad D330
  - resv: Improve the documentation
  - shmem-helpers: Allocate WC pages on x86, Switch to vmf_insert_pfn
  - sched: Fix for a timer being canceled too soon, Avoid null pointer
    derefence if the fence is null in drm_sched_fence_free, Convert
    drivers to rely on its dependency tracking
  - ttm: Switch to kerneldoc, new helper to clear all DMA mappings, pool
    shrinker optitimization, Remove ttm_tt_destroy_common, Fix for
    unbinding on multiple drivers

Driver Changes:
  - bochs: New PCI IDs
  - msm: Fence ordering impromevemnts
  - stm: Add layer alpha support, zpos
  - v3d: Fix for a Vulkan CTS failure
  - vc4: Conversion to the new bridge helpers
  - vgem: Use shmem helpers
  - virtio: Support mapping exported vram
  - zte: Remove obsolete driver

  - bridge: Probe improvements for it66121, enable DSI EOTP for anx7625,
    errors propagation improvements for anx7625

  - panels: 60fps mode for otm8009a, New driver for Samsung S6D27A1

Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Thu 16 Sep 2021 17:30:50 AEST
# gpg:                using EDDSA key 5C1337A45ECA9AEB89060E9EE3EF0D6F671851C5
# gpg: Can't check signature: No public key
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916073132.ptbbmjetm7v3ufq3@gilmour
3 years agoMAINTAINERS: fix typo in DRM DRIVER FOR SAMSUNG S6D27A1 PANELS
Lukas Bulwahn [Tue, 21 Sep 2021 12:21:46 +0000 (14:21 +0200)]
MAINTAINERS: fix typo in DRM DRIVER FOR SAMSUNG S6D27A1 PANELS

Commit ebd8cbf1fb96 ("drm/panel: s6d27a1: Add driver for Samsung S6D27A1
display panel") introduces a new section DRM DRIVER FOR SAMSUNG S6D27A1
PANELS with a minor typo in one of its file entries.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches  F:  driver/gpu/drm/panel/panel-samsung-s6d27a1.c

So, repair the entry and make get_maintainer.pl happy.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210921122146.13132-1-lukas.bulwahn@gmail.com
3 years agodrm/rockchip: remove of_match_ptr() from analogix dp driver
Souptick Joarder [Mon, 7 Jun 2021 18:48:36 +0000 (00:18 +0530)]
drm/rockchip: remove of_match_ptr() from analogix dp driver

Kernel test robot throws below warning when CONFIG_OF
is not set.

>> drivers/gpu/drm/rockchip/analogix_dp-rockchip.c:457:34:
warning: unused variable 'rockchip_dp_dt_ids' [-Wunused-const-variable]
   static const struct of_device_id rockchip_dp_dt_ids[] = {

Fixed it by removing of_match_ptr().

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210607184836.3502-1-jrdr.linux@gmail.com
3 years agodrm/rockchip: remove of_match_ptr() from vop_driver_dt_match
Souptick Joarder [Mon, 7 Jun 2021 19:08:00 +0000 (00:38 +0530)]
drm/rockchip: remove of_match_ptr() from vop_driver_dt_match

kernel test robot throws warning when CONFIG_OF not set.

>> drivers/gpu/drm/rockchip/rockchip_vop_reg.c:1038:34:
warning: unused variable 'vop_driver_dt_match' [-Wunused-const-variable]
   static const struct of_device_id vop_driver_dt_match[] = {

Fixed it by removing of_match_ptr().

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210607190800.3992-1-jrdr.linux@gmail.com
3 years agodrm/rockchip: Check iommu itself instead of it's parent for device_is_available
Andy Yan [Sun, 27 Jun 2021 08:47:37 +0000 (16:47 +0800)]
drm/rockchip: Check iommu itself instead of it's parent for device_is_available

When iommu itself is disabled in dts, we should
fallback to non-iommu buffer, check iommu parent
is meanless here.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210627084737.309163-1-andy.yan@rock-chips.com
3 years agodrm/rockchip: dsi: make hstt_table static
Jiapeng Chong [Fri, 6 Aug 2021 02:57:44 +0000 (10:57 +0800)]
drm/rockchip: dsi: make hstt_table static

This symbol is not used outside of dw-mipi-dsi-rockchip.c, so marks
it static.

Fix the following sparse warning:

drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c:646:13: warning: symbol
'hstt_table' was not declared. Should it be static?

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1628218664-14230-1-git-send-email-jiapeng.chong@linux.alibaba.com
3 years agodrm/rockchip: dsi: Fix duplicate included linux/phy/phy.h
Jiapeng Chong [Fri, 20 Aug 2021 10:18:49 +0000 (18:18 +0800)]
drm/rockchip: dsi: Fix duplicate included linux/phy/phy.h

Clean up the following includecheck warning:

./drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c: linux/phy/phy.h is
included more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Fixes: 71f68fe7f121 ("drm/rockchip: dsi: add ability to work as a phy instead of full dsi")
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1629454729-108701-1-git-send-email-jiapeng.chong@linux.alibaba.com
3 years agodrm/rockchip: Make use of the helper function devm_platform_ioremap_resource()
Cai Huoqing [Tue, 31 Aug 2021 13:57:21 +0000 (21:57 +0800)]
drm/rockchip: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210831135721.4726-1-caihuoqing@baidu.com
3 years agodrm/rockchip: add DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to drm_bridge_attach
Alex Bee [Mon, 13 Sep 2021 12:51:08 +0000 (14:51 +0200)]
drm/rockchip: add DRM_BRIDGE_ATTACH_NO_CONNECTOR flag to drm_bridge_attach

Commit a25b988ff83f ("drm/bridge: Extend bridge API to disable connector creation")
added DRM_BRIDGE_ATTACH_NO_CONNECTOR bridge flag and all bridges handle
this flag in some way since then.
Newly added bridge drivers must no longer contain the connector creation and
will fail probing if this flag isn't set.

In order to be able to connect to those newly added bridges as well,
make use of drm_bridge_connector API and have the connector initialized
by the display controller.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210913125108.195704-1-knaerzche@gmail.com
3 years agodrm/rockchip: handle non-platform devices in rockchip_drm_endpoint_is_subdriver
Alex Bee [Tue, 14 Sep 2021 15:07:56 +0000 (17:07 +0200)]
drm/rockchip: handle non-platform devices in rockchip_drm_endpoint_is_subdriver

As discussed at [1] rockchip_drm_endpoint_is_subdriver will currently always
return -ENODEV for non-platform-devices (e.g. external i2c bridges), what
makes them never being considered in rockchip_rgb_init.

As suggested at [1] this additionally adds a of_device_is_available for
the node found, which will work for both platform and non-platform devices.
Also we can return early for non-platform-devices if they are enabled,
as rockchip_sub_drivers contains exclusively platform-devices.

[1] https://lore.kernel.org/all/20210316182753.GA25685@earth.li/

Suggested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914150756.85190-1-knaerzche@gmail.com
3 years agodrm/rockchip: remove unused psr_list{,_lock}
Brian Norris [Wed, 15 Sep 2021 20:50:11 +0000 (13:50 -0700)]
drm/rockchip: remove unused psr_list{,_lock}

Some leftover cleanup from commit 6c836d965bad ("drm/rockchip: Use the
helpers for PSR").

Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210915135007.1.I926ef5cef287047c35a17e363c919599c6ee6e4c@changeid
3 years agoMAINTAINERS: add Andrey as the DRM GPU scheduler maintainer
Alex Deucher [Fri, 17 Sep 2021 16:15:40 +0000 (12:15 -0400)]
MAINTAINERS: add Andrey as the DRM GPU scheduler maintainer

Now that the scheduler is being used by more and more
drivers, we need someone to maintain it.  Andrey has
stepped up to maintain the scheduler.

Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: airlied@gmail.com
Cc: daniel.vetter@ffwll.ch
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210917161540.822282-2-alexander.deucher@amd.com
3 years agodrm/panel-edp: Implement generic "edp-panel"s probed by EDID
Douglas Anderson [Tue, 14 Sep 2021 20:22:02 +0000 (13:22 -0700)]
drm/panel-edp: Implement generic "edp-panel"s probed by EDID

As discussed in the patch ("dt-bindings: drm/panel-simple: Introduce
generic eDP panels") we can actually support probing eDP panels at
runtime instead of hardcoding what panel is connected. Add support to
the panel-edp driver for this.

We'll implement a solution like this:
* We'll read in two delays from the device tree that are used for
  powering up the panel the initial time (to read the EDID).
* In the EDID we can find a 32-bit ID that identifies what panel we've
  found. From this ID we can look up the full set of delays.

After this change we'll still need to add per-panel delays into the
panel-simple driver but we will no longer need to specify exactly
which panel is connected to which board in the device tree. Nicely,
any panels that are only supported this way also don't need to
hardcode mode data since it's guaranteed that we can get that through
the EDID.

This patch will seed the ID-to-delay table with a few panels that I
have access to, many of which are on sc7180-trogdor devices.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.15.Id9c96cba4eba3e5ee519bfb09cd64b39f2490293@changeid
3 years agodrm/panel-edp: Don't re-read the EDID every time we power off the panel
Douglas Anderson [Tue, 14 Sep 2021 20:22:01 +0000 (13:22 -0700)]
drm/panel-edp: Don't re-read the EDID every time we power off the panel

The simple-panel driver is for panels that are not hot-pluggable at
runtime. Let's keep our cached EDID around until driver unload.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.14.Ib810fb3bebd0bd6763e4609e1a6764d06064081e@changeid
3 years agodrm/panel-edp: Fix "prepare_to_enable" if panel doesn't handle HPD
Douglas Anderson [Tue, 14 Sep 2021 20:22:00 +0000 (13:22 -0700)]
drm/panel-edp: Fix "prepare_to_enable" if panel doesn't handle HPD

While cleaning up the descriptions of the delay for eDP panels I
realized that we'd have a bug if any panels need the
"prepare_to_enable" but HPD handling isn't happening in the panel
driver. Let's put in a stopgap to at least make us not violate
timings. This is not perfectly optimal but trying to do better is
hard. At the moment only 2 panels specify this delay and only 30 ms is
at stake. These panels are also currently hooked up with "hpd-gpios"
so effectively this "fix" is just a theoretical fix and won't actually
do anything for any devices currently supported in mainline.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.13.Ia8288d36df4b12770af59ae3ff73ef7e08fb4e2e@changeid
3 years agodrm/panel-edp: hpd_reliable shouldn't be subtraced from hpd_absent
Douglas Anderson [Tue, 14 Sep 2021 20:21:59 +0000 (13:21 -0700)]
drm/panel-edp: hpd_reliable shouldn't be subtraced from hpd_absent

Now that the delays are named / described with eDP-centric names, it
becomes clear that we should really specify the "hpd_reliable" and
"hpd_absent" separately without taking the other into account. Let's
fix it.

This should be a no-op change and just adjust how we specify
things. The actual delays should be the same before and after for the
one panel that currently species both "hpd_reliable" and "hpd_absent".

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.12.I2522235fca3aa6790ede0bf22a93d79a1f694e6b@changeid
3 years agodrm/panel-edp: Better describe eDP panel delays
Douglas Anderson [Tue, 14 Sep 2021 20:21:58 +0000 (13:21 -0700)]
drm/panel-edp: Better describe eDP panel delays

Now that the eDP panel driver only handles eDP panels we can make
better sense of the delays here. Let's describe them in terms of the
standard eDP timing diagram from the eDP spec.

As part of this, it becomes pretty clear that some eDP panels have too
long of a "hpd_reliable_delay". This used to be the "prepare"
delay. It's the fixed delay that we do in the panel driver after
powering on our panel before we look at the HPD signal. To understand
this better, first realize that there could be 3 paths we follow
depending on how HPD is hooked up. Let's walk through them:
1. HPD is handled by the eDP controller driver. Until "recently"
   (commit 48834e6084f1 ("drm/panel-simple: Support hpd-gpios for
   delaying prepare()") in May 2020) this was the only supported
   way. This is supposed to be when the controller driver gets HPD
   straight to a dedicated pin. In this case the controller driver
   should be waiting for HPD in its pre_enable() routine which should
   be called right after the panel's prepare() function is
   called. That means that the old "prepare" delay was only needed as
   a delay after powering the panel but before looking at HPD.
2. HPD is handled via hpd-gpios in the panel. This is much like #1 but
   much easier to follow since all the handling is in the panel
   driver.
3. The no-hpd case. This is also easy to follow.

In any case, even though it seems like some old panel data was using
this incorrectly, let's not touch the old data structures but we'll
add a note indicating that something seems off.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.11.I2d798dd015332661c5895ef744bc8ec5cd2e06ca@changeid
3 years agodrm/panel-edp: Split the delay structure out
Douglas Anderson [Tue, 14 Sep 2021 20:21:57 +0000 (13:21 -0700)]
drm/panel-edp: Split the delay structure out

In the case where we can read an EDID for a panel the only part of the
panel description that can't be found directly from the EDID is the
description of the delays. Let's break the delay structure out so that
we can specify just the delays for panels that are detected by EDID.

This is simple code motion. No functional change is intended.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.10.I24f3646dd09954958645cc05c538909f169bf362@changeid
3 years agodrm/panel-simple: Non-eDP panels don't need "HPD" handling
Douglas Anderson [Tue, 14 Sep 2021 20:21:56 +0000 (13:21 -0700)]
drm/panel-simple: Non-eDP panels don't need "HPD" handling

All of the "HPD" handling added to panel-simple recently was for eDP
panels. Remove it from panel-simple now that panel-edp handles eDP
panels. The "prepare_to_enable" delay only makes sense in the context
of HPD, so remove it too. No non-eDP panels used it anyway.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.9.I77d7a48df0a6585ef2cc2ff140fbe8f236a9a9f7@changeid
3 years agodrm/panel-edp: Move some wayward panels to the eDP driver
Douglas Anderson [Tue, 14 Sep 2021 20:21:55 +0000 (13:21 -0700)]
drm/panel-edp: Move some wayward panels to the eDP driver

Not all panels in panel-simple were marked what type of panel they
were. I searched through ARM/ARM64 Chromebooks or Chromebook-related
reference boards that I was aware of and found some panels that needed
to be moved. I also skimmed for panels that had no mode and were "big"
since it's quite rare to see a small eDP panel. Here's what I found:
* auo,b101ean01 - rk3288-veyron-minnie
* auo,b133htn01 - exynos5800-peach-pi
* auo,b133xtn01 - tegra124-nyan-big
* boe,nv101wxmn51 - rk3399-gru-bob
* innolux,p120zdg-bf1 - sdm845-cheza
* lg,lp079qx1-sp0v - rk3399-evb and similar
* lg,lp097qx1-spa1 - According to commit 0355dde26e52 ("drm/panel:
  simple: Add support for LG LP097QX1-SPA1 panel") this is an eDP
  panel.
* lg,lp129qe - tegra124-venice2
* samsung,lsn122dl01-c01 - According to commit 0330eaf39082
  ("drm/panel: simple: Add support for Samsung LSN122DL01-C01 panel")
  this is an eDP panel.
* samsung,ltn140at29-301 - tegra124-nyan-blaze
* sharp,ld-d5116z01b - According to commit cd5e1cbe1f0a ("drm/panel:
  simple: Add support for Sharp LD-D5116Z01B panel") this is an eDP
  panel.
* sharp,lq123p1jx31 - rk3399-gru-kevin
* starry,kr122ea0sra - rk3399-gru-gru (reference board, not upstream)

I won't promise that I didn't miss a single panel, but that's fairly
complete I think.

I'm not sure the full impact of the fact that they didn't have the
connector type specified, but at least as of commit 9f069c6fbc72
("drm/panel: panel-simple: add default connector_type") we may have
been accidentally thinking of them as DPI panels. We also would
certainly have had a warning. In any case since we don't want to
support anything eDP in the old simple-panel driver, we should move
these.

Cc: Yakir Yang <ykk@rock-chips.com>
Cc: Jeffrey Hugo <jeffrey.l.hugo@gmail.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.8.I84e36f9f86d5d693fce0641a55ddb264a518a947@changeid
3 years agodrm/panel-edp: Split eDP panels out of panel-simple
Douglas Anderson [Tue, 14 Sep 2021 20:21:54 +0000 (13:21 -0700)]
drm/panel-edp: Split eDP panels out of panel-simple

The panel-simple driver handles way too much. Let's start trying to
get a handle on it by splitting out the eDP panels. This patch does
this:

1. Start by copying simple-panel verbatim over to a new driver,
   simple-panel-edp.
2. Rename "panel_simple" to "panel_edp" in the new driver.
3. Keep only panels marked with `DRM_MODE_CONNECTOR_eDP` in the new
   driver. Remove those panels from the old driver.
4. Remove all recent "DP AUX bus" stuff from the old driver. The DP
   AUX bus is only possible on DP panels.
5. Remove all DSI / MIPI related functions from the new driver.
6. Remove bus_format / bus_flags from eDP driver. These things don't
   seem to make any sense for eDP panels so let's stop filling in made
   up stuff.

In the end we end up with a bunch of duplicated code for now. Future
patches will try to address _some_ of this duplicated code though some
of it will be unavoidable.

NOTE: This may not actually move all eDP panels over to the new driver
since not all panels were properly marked with
`DRM_MODE_CONNECTOR_eDP`. A future patch will attempt to move wayward
panels I could identify but even so there may be some missed.

Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.7.I0a2f75bb822d17ce06f5b147734764eeb0c3e3df@changeid
3 years agoarm64: defconfig: Everyone who had PANEL_SIMPLE now gets PANEL_EDP
Douglas Anderson [Tue, 14 Sep 2021 20:21:53 +0000 (13:21 -0700)]
arm64: defconfig: Everyone who had PANEL_SIMPLE now gets PANEL_EDP

In the patch ("drm/panel-simple-edp: Split eDP panels out of
panel-simple") we split the PANEL_SIMPLE driver in 2. Let's enable the
new config.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.6.Ied5c4da3ea36f8c49343176eda342027b6f19586@changeid
3 years agoARM: configs: Everyone who had PANEL_SIMPLE now gets PANEL_EDP
Douglas Anderson [Tue, 14 Sep 2021 20:21:52 +0000 (13:21 -0700)]
ARM: configs: Everyone who had PANEL_SIMPLE now gets PANEL_EDP

In the patch ("drm/panel-simple-edp: Split eDP panels out of
panel-simple") we will split the PANEL_SIMPLE driver in two. By
default let's give everyone who had the old driver enabled the new
driver too. If folks want to opt-out of one or the other they always
can later.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.5.I02250cd7d4799661b068bcc65849a456ed411734@changeid
3 years agodrm/edid: Use new encoded panel id style for quirks matching
Douglas Anderson [Tue, 14 Sep 2021 20:21:51 +0000 (13:21 -0700)]
drm/edid: Use new encoded panel id style for quirks matching

In the patch ("drm/edid: Allow the querying/working with the panel ID
from the EDID") we introduced a different way of working with the
panel ID stored in the EDID. Let's use this new way for the quirks
code.

Advantages of the new style:
* Smaller data structure size. Saves 4 bytes per panel.
* Iterate through quirks structure with just "==" instead of strncmp()
* In-kernel storage is more similar to what's stored in the EDID
  itself making it easier to grok that they are referring to the same
  value.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.4.I6103ce2b16e5e5a842b14c7022a034712b434609@changeid
3 years agodrm/edid: Allow querying/working with the panel ID from the EDID
Douglas Anderson [Tue, 14 Sep 2021 20:21:50 +0000 (13:21 -0700)]
drm/edid: Allow querying/working with the panel ID from the EDID

EDIDs have 32-bits worth of data which is intended to be used to
uniquely identify the make/model of a panel. This has historically
been used only internally in the EDID processing code to identify
quirks with panels.

We'd like to use this panel ID in panel drivers to identify which
panel is hooked up and from that information figure out power sequence
timings. Let's expose this information from the EDID code and also
allow it to be accessed early, before a connector has been created.

To make matching in the panel drivers code easier, we'll return the
panel ID as a 32-bit value. We'll provide some functions for
converting this value back and forth to something more human readable.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.3.I4a672175ba1894294d91d3dbd51da11a8239cf4a@changeid
3 years agodrm/edid: Break out reading block 0 of the EDID
Douglas Anderson [Tue, 14 Sep 2021 20:21:49 +0000 (13:21 -0700)]
drm/edid: Break out reading block 0 of the EDID

A future change wants to be able to read just block 0 of the EDID, so
break it out of drm_do_get_edid() into a sub-function.

This is intended to be a no-op change--just code movement.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.2.I62e76a034ac78c994d40a23cd4ec5aeee56fa77c@changeid
3 years agodt-bindings: drm/panel-simple-edp: Introduce generic eDP panels
Douglas Anderson [Tue, 14 Sep 2021 20:21:48 +0000 (13:21 -0700)]
dt-bindings: drm/panel-simple-edp: Introduce generic eDP panels

eDP panels generally contain almost everything needed to control them
in their EDID. This comes from their DP heritage were a computer needs
to be able to properly control pretty much any DP display that's
plugged into it.

The one big issue with eDP panels and the reason that we need a panel
driver for them is that the power sequencing can be different per
panel.

While it is true that eDP panel sequencing can be arbitrarily complex,
in practice it turns out that many eDP panels are compatible with just
some slightly different delays. See the contents of the bindings file
introduced in this patch for some details.

The fact that eDP panels are 99% probable and that the power
sequencing (especially power up) can be compatible between many panels
means that there's a constant desire to plug multiple different panels
into the same board. This could be for second sourcing purposes or to
support multiple SKUs (maybe a 11" and a 13", for instance).

As discussed [1], it should be OK to support this by adding two
properties to the device tree to specify the delays needed for
powering up the panel the first time. We'll create a new "edp-panel"
bindings file and define the two delays that might need to be
specified. NOTE: in the vast majority of the cases (HPD is hooked up
and isn't glitchy or is debounced) even these delays aren't needed.

[1] https://lore.kernel.org/r/CAD=FV=VZYOMPwQZzWdhJGh5cjJWw_EcM-wQVEivZ-bdGXjPrEQ@mail.gmail.com

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.1.I1116e79d34035338a45c1fc7cdd14a097909c8e0@changeid
3 years agodrm/panfrost: simplify getting .driver_data
Wolfram Sang [Mon, 20 Sep 2021 09:05:17 +0000 (11:05 +0200)]
drm/panfrost: simplify getting .driver_data

We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210920090522.23784-6-wsa+renesas@sang-engineering.com
3 years agopanfrost: make mediatek_mt8183_supplies and mediatek_mt8183_pm_domains static
Jiapeng Chong [Sat, 18 Sep 2021 09:13:34 +0000 (17:13 +0800)]
panfrost: make mediatek_mt8183_supplies and mediatek_mt8183_pm_domains static

This symbol is not used outside of panfrost_drv.c, so marks it static.

Fix the following sparse warning:

drivers/gpu/drm/panfrost/panfrost_drv.c:641:12: warning: symbol
'mediatek_mt8183_supplies' was not declared. Should it be static?

drivers/gpu/drm/panfrost/panfrost_drv.c:642:12: warning: symbol
'mediatek_mt8183_pm_domains' was not declared. Should it be static?

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1631956414-85412-1-git-send-email-jiapeng.chong@linux.alibaba.com
3 years agodrm/v3d: Make use of the helper function devm_platform_ioremap_resource_byname()
Cai Huoqing [Wed, 1 Sep 2021 11:29:40 +0000 (19:29 +0800)]
drm/v3d: Make use of the helper function devm_platform_ioremap_resource_byname()

Use the devm_platform_ioremap_resource_byname() helper instead of
calling platform_get_resource_byname() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210901112941.31320-1-caihuoqing@baidu.com
3 years agodrm: bridge: it66121: Fix return value it66121_probe
Alex Bee [Sat, 18 Sep 2021 14:04:20 +0000 (16:04 +0200)]
drm: bridge: it66121: Fix return value it66121_probe

Currently it66121_probe returns -EPROBE_DEFER if the there is no remote
endpoint found in the device tree which doesn't seem helpful, since this
is not going to change later and it is never checked if the next bridge
has been initialized yet. It will fail in that case later while doing
drm_bridge_attach for the next bridge in it66121_bridge_attach.

Since the bindings documentation for it66121 bridge driver states
there has to be a remote endpoint defined, its safe to return -EINVAL
in that case.
This additonally adds a check, if the remote endpoint is enabled and
returns -EPROBE_DEFER, if the remote bridge hasn't been initialized
(yet).

Fixes: 988156dc2fc9 ("drm: bridge: add it66121 driver")
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210918140420.231346-1-knaerzche@gmail.com
3 years agoLinux 5.15-rc2
Linus Torvalds [Mon, 20 Sep 2021 00:28:22 +0000 (17:28 -0700)]
Linux 5.15-rc2

3 years agopci_iounmap'2: Electric Boogaloo: try to make sense of it all
Linus Torvalds [Mon, 20 Sep 2021 00:13:35 +0000 (17:13 -0700)]
pci_iounmap'2: Electric Boogaloo: try to make sense of it all

Nathan Chancellor reports that the recent change to pci_iounmap in
commit 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only
when CONFIG_PCI enabled") causes build errors on arm64.

It took me about two hours to convince myself that I think I know what
the logic of that mess of #ifdef's in the <asm-generic/io.h> header file
really aim to do, and rewrite it to be easier to follow.

Famous last words.

Anyway, the code has now been lifted from that grotty header file into
lib/pci_iomap.c, and has fairly extensive comments about what the logic
is.  It also avoids indirecting through another confusing (and badly
named) helper function that has other preprocessor config conditionals.

Let's see what odd architecture did something else strange in this area
to break things.  But my arm64 cross build is clean.

Fixes: 9caea0007601 ("parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:29:36 +0000 (13:29 -0700)]
Merge tag 'x86_urgent_for_v5.15_rc2' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Prevent a infinite loop in the MCE recovery on return to user space,
   which was caused by a second MCE queueing work for the same page and
   thereby creating a circular work list.

 - Make kern_addr_valid() handle existing PMD entries, which are marked
   not present in the higher level page table, correctly instead of
   blindly dereferencing them.

 - Pass a valid address to sanitize_phys(). This was caused by the
   mixture of inclusive and exclusive ranges. memtype_reserve() expect
   'end' being exclusive, but sanitize_phys() wants it inclusive. This
   worked so far, but with end being the end of the physical address
   space the fail is exposed.

 - Increase the maximum supported GPIO numbers for 64bit. Newer SoCs
   exceed the previous maximum.

* tag 'x86_urgent_for_v5.15_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Avoid infinite loop for copy from user recovery
  x86/mm: Fix kern_addr_valid() to cope with existing but not present entries
  x86/platform: Increase maximum GPIO number for X86_64
  x86/pat: Pass valid address to sanitize_phys()

3 years agoMerge tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 19 Sep 2021 20:22:40 +0000 (13:22 -0700)]
Merge tag 'perf-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull perf event fix from Thomas Gleixner:
 "A single fix for the perf core where a value read with READ_ONCE() was
  checked and then reread which makes all the checks invalid. Reuse the
  already read value instead"

* tag 'perf-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  events: Reuse value read using READ_ONCE instead of re-reading it

3 years agoMerge tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 19 Sep 2021 20:11:19 +0000 (13:11 -0700)]
Merge tag 'locking-urgent-2021-09-19' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "A set of updates for the RT specific reader/writer locking base code:

   - Make the fast path reader ordering guarantees correct.

   - Code reshuffling to make the fix simpler"

[ This plays ugly games with atomic_add_return_release() because we
  don't have a plain atomic_add_release(), and should really be cleaned
  up, I think    - Linus ]

* tag 'locking-urgent-2021-09-19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwbase: Take care of ordering guarantee for fastpath reader
  locking/rwbase: Extract __rwbase_write_trylock()
  locking/rwbase: Properly match set_and_save_state() to restore_state()

3 years agoMerge tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 19 Sep 2021 20:00:23 +0000 (13:00 -0700)]
Merge tag 'powerpc-5.15-2' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix crashes when scv (System Call Vectored) is used to make a syscall
   when a transaction is active, on Power9 or later.

 - Fix bad interactions between rfscv (Return-from scv) and Power9
   fake-suspend mode.

 - Fix crashes when handling machine checks in LPARs using the Hash MMU.

 - Partly revert a recent change to our XICS interrupt controller code,
   which broke the recently added Microwatt support.

Thanks to Cédric Le Goater, Eirik Fuller, Ganesh Goudar, Gustavo Romero,
Joel Stanley, Nicholas Piggin.

* tag 'powerpc-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/xics: Set the IRQ chip data for the ICS native backend
  powerpc/mce: Fix access error in mce handler
  KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers
  powerpc/64s: system call rfscv workaround for TM bugs
  selftests/powerpc: Add scv versions of the basic TM syscall tests
  powerpc/64s: system call scv tabort fix for corrupt irq soft-mask state

3 years agoMerge tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masah...
Linus Torvalds [Sun, 19 Sep 2021 19:55:12 +0000 (12:55 -0700)]
Merge tag 'kbuild-fixes-v5.15' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix bugs in checkkconfigsymbols.py

 - Fix missing sys import in gen_compile_commands.py

 - Fix missing FORCE warning for ARCH=sh builds

 - Fix -Wignored-optimization-argument warnings for Clang builds

 - Turn -Wignored-optimization-argument into an error in order to stop
   building instead of sprinkling warnings

* tag 'kbuild-fixes-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS
  x86/build: Do not add -falign flags unconditionally for clang
  kbuild: Fix comment typo in scripts/Makefile.modpost
  sh: Add missing FORCE prerequisites in Makefile
  gen_compile_commands: fix missing 'sys' package
  checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file
  checkkconfigsymbols.py: Forbid passing 'HEAD' to --commit

3 years agoMerge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm...
Linus Torvalds [Sun, 19 Sep 2021 19:49:17 +0000 (12:49 -0700)]
Merge tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git./linux/kernel/git/acme/linux

Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix ip display in 'perf script' when output type != attr->type.

 - Ignore deprecation warning when using libbpf'sg btf__get_from_id(),
   fixing the build with libbpf v0.6+.

 - Make use of FD() robust in libperf, fixing a segfault with 'perf stat
   --iostat list'.

 - Initialize addr_location:srcline pointer to NULL when resolving
   callchain addresses.

 - Fix fused instruction logic for assembly functions in 'perf
   annotate'.

* tag 'perf-tools-fixes-for-v5.15-2021-09-18' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()
  libperf evsel: Make use of FD robust.
  perf machine: Initialize srcline string member in add_location struct
  perf script: Fix ip display when type != attr->type
  perf annotate: Fix fused instr logic for assembly functions

3 years agodrm/v3d: fix sched job resources cleanup when a job is aborted
Melissa Wen [Thu, 16 Sep 2021 21:27:26 +0000 (22:27 +0100)]
drm/v3d: fix sched job resources cleanup when a job is aborted

In a cl submission, when bin job initialization fails, sched job resources
were already allocated for the render job. At this point,
drm_sched_job_init(render) was done in v3d_job_init but the render job is
aborted before drm_sched_job_arm (in v3d_job_push) happens; therefore, not
only v3d_job_put but also drm_sched_job_cleanup should be called (by
v3d_job_cleanup). A similar issue is addressed for csd and tfu submissions.

The issue was noticed from a review by Iago Toral in a patch that touches
the same part of the code.

Fixes: 916044fac8623 ("drm/v3d: Move drm_sched_job_init to v3d_job_init")
Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916212726.2u2psq2egwy2mdva@mail.igalia.com
3 years agodmascc: use proper 'virt_to_bus()' rather than casting to 'int'
Linus Torvalds [Sun, 19 Sep 2021 17:49:42 +0000 (10:49 -0700)]
dmascc: use proper 'virt_to_bus()' rather than casting to 'int'

The old dmascc driver depends on the legacy ISA_DMA_API, and blindly
just casts the kernel virtual address to 'int' for set_dma_addr().

That works only incidentally, and because the high bits of the address
will be ignored anyway. And on 64-bit architectures it causes warnings.

Admittedly, 64-bit architectures with ISA are basically dead - I think
the only example of this is alpha, and nobody would ever use the dmascc
driver there.  But hey, the fix is easy enough, the end result is
cleaner, and it's yet another configuration that now builds without
warnings.

If somebody actually uses this driver on an alpha and this fixes it for
you, please email me.  Because that is just incredibly bizarre.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: enable GENERIC_PCI_IOMAP unconditionally
Linus Torvalds [Sun, 19 Sep 2021 17:37:00 +0000 (10:37 -0700)]
alpha: enable GENERIC_PCI_IOMAP unconditionally

With the previous commit (9caea0007601: "parisc: Declare pci_iounmap()
parisc version only when CONFIG_PCI enabled") we can now enable
GENERIC_PCI_IOMAP unconditionally on alpha, and if PCI is not enabled we
will just get the nice empty helper functions that allow mixed-bus
drivers to build.

Example driver: the old 3com/3c59x.c driver works with either the PCI or
the EISA version of the 3x59x card, but wouldn't build in an EISA-only
configuration because of missing pci_iomap() and pci_iounmap() dummy
wrappers.

Most of the other PCI infrastructure just becomes empty wrappers even
without GENERIC_PCI_IOMAP, and it's not obvious that the pci_iomap
functionality shouldn't do the same, but this works.

Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoparisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled
Helge Deller [Sun, 19 Sep 2021 17:36:09 +0000 (10:36 -0700)]
parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled

Linus noticed odd declaration rules for pci_iounmap() in iomap.h and
pci_iomap.h, where it dependend on either NO_GENERIC_PCI_IOPORT_MAP or
GENERIC_IOMAP when CONFIG_PCI was disabled.

Testing on parisc seems to indicate that we need pci_iounmap() only when
CONFIG_PCI is enabled, so the declaration of pci_iounmap() can be moved
cleanly into pci_iomap.h in sync with the declarations of pci_iomap().

Link: https://lore.kernel.org/all/CAHk-=wjRrh98pZoQ+AzfWmsTZacWxTJKXZ9eKU2X_0+jM=O8nw@mail.gmail.com/
Signed-off-by: Helge Deller <deller@gmx.de>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 97a29d59fc22 ("[PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional")
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Ulrich Teichert <krypton@ulrich-teichert.org>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRevert "drm/vc4: hdmi: Remove drm_encoder->crtc usage"
Linus Torvalds [Sun, 19 Sep 2021 17:11:53 +0000 (10:11 -0700)]
Revert "drm/vc4: hdmi: Remove drm_encoder->crtc usage"

This reverts commit 27da370e0fb343a0baf308f503bb3e5dcdfe3362.

Sudip Mukherjee reports that this broke pulseaudio with a NULL pointer
dereference in vc4_hdmi_audio_prepare(), bisected it to this commit, and
confirmed that a revert fixed the problem.

Revert the problematic commit until fixed.

Link: https://lore.kernel.org/all/CADVatmPB9-oKd=ypvj25UYysVo6EZhQ6bCM7EvztQBMyiZfAyw@mail.gmail.com/
Link: https://lore.kernel.org/all/CADVatmN5EpRshGEPS_JozbFQRXg5w_8LFB3OMP1Ai-ghxd3w4g@mail.gmail.com/
Reported-and-tested-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Emma Anholt <emma@anholt.net>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRevert drm/vc4 hdmi runtime PM changes
Linus Torvalds [Sun, 19 Sep 2021 17:06:46 +0000 (10:06 -0700)]
Revert drm/vc4 hdmi runtime PM changes

This reverts commits

  9984d6664ce9 ("drm/vc4: hdmi: Make sure the controller is powered in detect")
  411efa18e4b0 ("drm/vc4: hdmi: Move the HSM clock enable to runtime_pm")

as Michael Stapelberg reports that the new runtime PM changes cause his
Raspberry Pi 3 to hang on boot, probably due to interactions with other
changes in the DRM tree (because a bisect points to the merge in commit
e058a84bfddc: "Merge tag 'drm-next-2021-07-01' of git://.../drm").

Revert these two commits until it's been resolved.

Link: https://lore.kernel.org/all/871r5mp7h2.fsf@midna.i-did-not-set--mail-host-address--so-tickle-me/
Reported-and-tested-by: Michael Stapelberg <michael@stapelberg.ch>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: Dave Airlie <airlied@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agokbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS
Nathan Chancellor [Thu, 16 Sep 2021 18:40:17 +0000 (11:40 -0700)]
kbuild: Add -Werror=ignored-optimization-argument to CLANG_FLAGS

Similar to commit 589834b3a009 ("kbuild: Add
-Werror=unknown-warning-option to CLANG_FLAGS").

Clang ignores certain GCC flags that it has not implemented, only
emitting a warning:

$ echo | clang -fsyntax-only -falign-jumps -x c -
clang-14: warning: optimization flag '-falign-jumps' is not supported
[-Wignored-optimization-argument]

When one of these flags gets added to KBUILD_CFLAGS unconditionally, all
subsequent cc-{disable-warning,option} calls fail because -Werror was
added to these invocations to turn the above warning and the equivalent
-W flag warning into errors.

To catch the presence of these flags earlier, turn
-Wignored-optimization-argument into an error so that the flags can
either be implemented or ignored via cc-option and there are no more
weird errors.

Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agox86/build: Do not add -falign flags unconditionally for clang
Nathan Chancellor [Thu, 16 Sep 2021 18:40:16 +0000 (11:40 -0700)]
x86/build: Do not add -falign flags unconditionally for clang

clang does not support -falign-jumps and only recently gained support
for -falign-loops. When one of the configuration options that adds these
flags is enabled, clang warns and all cc-{disable-warning,option} that
follow fail because -Werror gets added to test for the presence of this
warning:

clang-14: warning: optimization flag '-falign-jumps=0' is not supported
[-Wignored-optimization-argument]

To resolve this, add a couple of cc-option calls when building with
clang; gcc has supported these options since 3.2 so there is no point in
testing for their support. -falign-functions was implemented in clang-7,
-falign-loops was implemented in clang-14, and -falign-jumps has not
been implemented yet.

Link: https://lore.kernel.org/r/YSQE2f5teuvKLkON@Ryzen-9-3900X.localdomain/
Link: https://lore.kernel.org/r/20210824022640.2170859-2-nathan@kernel.org/
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agokbuild: Fix comment typo in scripts/Makefile.modpost
Ramji Jiyani [Thu, 16 Sep 2021 09:21:22 +0000 (09:21 +0000)]
kbuild: Fix comment typo in scripts/Makefile.modpost

Change comment "create one <module>.mod.c file pr. module"
to "create one <module>.mod.c file per module"

Signed-off-by: Ramji Jiyani <ramjiyani@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agosh: Add missing FORCE prerequisites in Makefile
Geert Uytterhoeven [Thu, 16 Sep 2021 08:43:53 +0000 (10:43 +0200)]
sh: Add missing FORCE prerequisites in Makefile

make:

    arch/sh/boot/Makefile:87: FORCE prerequisite is missing

Add the missing FORCE prerequisites for all build targets identified by
"make help".

Fixes: e1f86d7b4b2a5213 ("kbuild: warn if FORCE is missing for if_changed(_dep,_rule) and filechk")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agogen_compile_commands: fix missing 'sys' package
Kortan [Wed, 8 Sep 2021 03:28:48 +0000 (11:28 +0800)]
gen_compile_commands: fix missing 'sys' package

We need to import the 'sys' package since the script has called
sys.exit() method.

Fixes: 6ad7cbc01527 ("Makefile: Add clang-tidy and static analyzer support to makefile")
Signed-off-by: Kortan <kortanzh@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agocheckkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file
Ariel Marcovitch [Wed, 1 Sep 2021 16:49:52 +0000 (19:49 +0300)]
checkkconfigsymbols.py: Remove skipping of help lines in parse_kconfig_file

When parsing Kconfig files to find symbol definitions and references,
lines after a 'help' line are skipped until a new config definition
starts.

However, Kconfig statements can actually be after a help section, as
long as these have shallower indentation. These are skipped by the
parser.

This means that symbols referenced in this kind of statements are
ignored by this function and thus are not considered undefined
references in case the symbol is not defined.

Remove the 'skip' logic entirely, as it is not needed if we just use the
STMT regex to find the end of help lines.

However, this means that keywords that appear as part of the help
message (i.e. with the same indentation as the help lines) it will be
considered as a reference/definition. This can happen now as well, but
only with REGEX_KCONFIG_DEF lines. Also, the keyword must have a SYMBOL
after it, which probably means that someone referenced a config in the
help so it seems like a bonus :)

The real solution is to keep track of the indentation when a the first
help line in encountered and then handle DEF and STMT lines only if the
indentation is shallower.

Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agocheckkconfigsymbols.py: Forbid passing 'HEAD' to --commit
Ariel Marcovitch [Wed, 1 Sep 2021 14:52:12 +0000 (17:52 +0300)]
checkkconfigsymbols.py: Forbid passing 'HEAD' to --commit

As opposed to the --diff option, --commit can get ref names instead of
commit hashes.

When using the --commit option, the script resets the working directory
to the commit before the given ref, by adding '~' to the end of the ref.

However, the 'HEAD' ref is relative, and so when the working directory
is reset to 'HEAD~', 'HEAD' points to what was 'HEAD~'. Then when the
script resets to 'HEAD' it actually stays in the same commit. In this
case, the script won't report any cases because there is no diff between
the cases of the two refs.

Prevent the user from using HEAD refs.

A better solution might be to resolve the refs before doing the
reset, but for now just disallow such refs.

Signed-off-by: Ariel Marcovitch <arielmarcovitch@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
3 years agoalpha: move __udiv_qrnnd library function to arch/alpha/lib/
Linus Torvalds [Sat, 18 Sep 2021 21:45:48 +0000 (14:45 -0700)]
alpha: move __udiv_qrnnd library function to arch/alpha/lib/

We already had the implementation for __udiv_qrnnd (unsigned divide for
multi-precision arithmetic) as part of the alpha math emulation code.

But you can disable the math emulation code - even if you shouldn't -
and then the MPI code that actually wants this functionality (and is
needed by various crypto functions) will fail to build.

So move the extended-precision divide code to be a regular library
function, just like all the regular division code is.  That way ie is
available regardless of math-emulation.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: mark 'Jensen' platform as no longer broken
Linus Torvalds [Sat, 18 Sep 2021 21:12:39 +0000 (14:12 -0700)]
alpha: mark 'Jensen' platform as no longer broken

Ok, it almost certainly is still broken on actual hardware, but the
immediate reason for it having been marked BROKEN was a build error that
is fixed by just making sure the low-level IO header file is included
sufficiently early that the __EXTERN_INLINE hackery takes effect.

This was marked broken back in 2017 by commit 1883c9f49d02 ("alpha: mark
jensen as broken"), but Ulrich Teichert made me look at it as part of my
cross-build work to make sure -Werror actually does the right thing.

There are lots of alpha configurations that do not build cleanly, but
now it's no longer because Jensen wouldn't be buildable.  That said,
because the Jensen platform doesn't force PCI to be enabled (Jensen only
had EISA), it ends up being somewhat interesting as a source of odd
configs.

Reported-by: Ulrich Teichert <krypton@ulrich-teichert.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoperf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()
Andrii Nakryiko [Tue, 14 Sep 2021 17:00:04 +0000 (10:00 -0700)]
perf bpf: Ignore deprecation warning when using libbpf's btf__get_from_id()

Perf code re-implements libbpf's btf__load_from_kernel_by_id() API as
a weak function, presumably to dynamically link against old version of
libbpf shared library. Unfortunately this causes compilation warning
when perf is compiled against libbpf v0.6+.

For now, just ignore deprecation warning, but there might be a better
solution, depending on perf's needs.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: kernel-team@fb.com
LPU-Reference: 20210914170004.4185659-1-andrii@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agolibperf evsel: Make use of FD robust.
Ian Rogers [Sat, 18 Sep 2021 05:44:40 +0000 (22:44 -0700)]
libperf evsel: Make use of FD robust.

FD uses xyarray__entry that may return NULL if an index is out of
bounds. If NULL is returned then a segv happens as FD unconditionally
dereferences the pointer. This was happening in a case of with perf
iostat as shown below. The fix is to make FD an "int*" rather than an
int and handle the NULL case as either invalid input or a closed fd.

  $ sudo gdb --args perf stat --iostat  list
  ...
  Breakpoint 1, perf_evsel__alloc_fd (evsel=0x5555560951a0, ncpus=1, nthreads=1) at evsel.c:50
  50      {
  (gdb) bt
   #0  perf_evsel__alloc_fd (evsel=0x5555560951a0, ncpus=1, nthreads=1) at evsel.c:50
   #1  0x000055555585c188 in evsel__open_cpu (evsel=0x5555560951a0, cpus=0x555556093410,
      threads=0x555556086fb0, start_cpu=0, end_cpu=1) at util/evsel.c:1792
   #2  0x000055555585cfb2 in evsel__open (evsel=0x5555560951a0, cpus=0x0, threads=0x555556086fb0)
      at util/evsel.c:2045
   #3  0x000055555585d0db in evsel__open_per_thread (evsel=0x5555560951a0, threads=0x555556086fb0)
      at util/evsel.c:2065
   #4  0x00005555558ece64 in create_perf_stat_counter (evsel=0x5555560951a0,
      config=0x555555c34700 <stat_config>, target=0x555555c2f1c0 <target>, cpu=0) at util/stat.c:590
   #5  0x000055555578e927 in __run_perf_stat (argc=1, argv=0x7fffffffe4a0, run_idx=0)
      at builtin-stat.c:833
   #6  0x000055555578f3c6 in run_perf_stat (argc=1, argv=0x7fffffffe4a0, run_idx=0)
      at builtin-stat.c:1048
   #7  0x0000555555792ee5 in cmd_stat (argc=1, argv=0x7fffffffe4a0) at builtin-stat.c:2534
   #8  0x0000555555835ed3 in run_builtin (p=0x555555c3f540 <commands+288>, argc=3,
      argv=0x7fffffffe4a0) at perf.c:313
   #9  0x0000555555836154 in handle_internal_command (argc=3, argv=0x7fffffffe4a0) at perf.c:365
   #10 0x000055555583629f in run_argv (argcp=0x7fffffffe2ec, argv=0x7fffffffe2e0) at perf.c:409
   #11 0x0000555555836692 in main (argc=3, argv=0x7fffffffe4a0) at perf.c:539
  ...
  (gdb) c
  Continuing.
  Error:
  The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (uncore_iio_0/event=0x83,umask=0x04,ch_mask=0xF,fc_mask=0x07/).
  /bin/dmesg | grep -i perf may provide additional information.

  Program received signal SIGSEGV, Segmentation fault.
  0x00005555559b03ea in perf_evsel__close_fd_cpu (evsel=0x5555560951a0, cpu=1) at evsel.c:166
  166                     if (FD(evsel, cpu, thread) >= 0)

v3. fixes a bug in perf_evsel__run_ioctl where the sense of a branch was
    backward.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210918054440.2350466-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf machine: Initialize srcline string member in add_location struct
Michael Petlan [Mon, 19 Jul 2021 14:53:32 +0000 (16:53 +0200)]
perf machine: Initialize srcline string member in add_location struct

It's later supposed to be either a correct address or NULL. Without the
initialization, it may contain an undefined value which results in the
following segmentation fault:

  # perf top --sort comm -g --ignore-callees=do_idle

terminates with:

  #0  0x00007ffff56b7685 in __strlen_avx2 () from /lib64/libc.so.6
  #1  0x00007ffff55e3802 in strdup () from /lib64/libc.so.6
  #2  0x00005555558cb139 in hist_entry__init (callchain_size=<optimized out>, sample_self=true, template=0x7fffde7fb110, he=0x7fffd801c250) at util/hist.c:489
  #3  hist_entry__new (template=template@entry=0x7fffde7fb110, sample_self=sample_self@entry=true) at util/hist.c:564
  #4  0x00005555558cb4ba in hists__findnew_entry (hists=hists@entry=0x5555561d9e38, entry=entry@entry=0x7fffde7fb110, al=al@entry=0x7fffde7fb420,
      sample_self=sample_self@entry=true) at util/hist.c:657
  #5  0x00005555558cba1b in __hists__add_entry (hists=hists@entry=0x5555561d9e38, al=0x7fffde7fb420, sym_parent=<optimized out>, bi=bi@entry=0x0, mi=mi@entry=0x0,
      sample=sample@entry=0x7fffde7fb4b0, sample_self=true, ops=0x0, block_info=0x0) at util/hist.c:288
  #6  0x00005555558cbb70 in hists__add_entry (sample_self=true, sample=0x7fffde7fb4b0, mi=0x0, bi=0x0, sym_parent=<optimized out>, al=<optimized out>, hists=0x5555561d9e38)
      at util/hist.c:1056
  #7  iter_add_single_cumulative_entry (iter=0x7fffde7fb460, al=<optimized out>) at util/hist.c:1056
  #8  0x00005555558cc8a4 in hist_entry_iter__add (iter=iter@entry=0x7fffde7fb460, al=al@entry=0x7fffde7fb420, max_stack_depth=<optimized out>, arg=arg@entry=0x7fffffff7db0)
      at util/hist.c:1231
  #9  0x00005555557cdc9a in perf_event__process_sample (machine=<optimized out>, sample=0x7fffde7fb4b0, evsel=<optimized out>, event=<optimized out>, tool=0x7fffffff7db0)
      at builtin-top.c:842
  #10 deliver_event (qe=<optimized out>, qevent=<optimized out>) at builtin-top.c:1202
  #11 0x00005555558a9318 in do_flush (show_progress=false, oe=0x7fffffff80e0) at util/ordered-events.c:244
  #12 __ordered_events__flush (oe=oe@entry=0x7fffffff80e0, how=how@entry=OE_FLUSH__TOP, timestamp=timestamp@entry=0) at util/ordered-events.c:323
  #13 0x00005555558a9789 in __ordered_events__flush (timestamp=<optimized out>, how=<optimized out>, oe=<optimized out>) at util/ordered-events.c:339
  #14 ordered_events__flush (how=OE_FLUSH__TOP, oe=0x7fffffff80e0) at util/ordered-events.c:341
  #15 ordered_events__flush (oe=oe@entry=0x7fffffff80e0, how=how@entry=OE_FLUSH__TOP) at util/ordered-events.c:339
  #16 0x00005555557cd631 in process_thread (arg=0x7fffffff7db0) at builtin-top.c:1114
  #17 0x00007ffff7bb817a in start_thread () from /lib64/libpthread.so.0
  #18 0x00007ffff5656dc3 in clone () from /lib64/libc.so.6

If you look at the frame #2, the code is:

488  if (he->srcline) {
489          he->srcline = strdup(he->srcline);
490          if (he->srcline == NULL)
491              goto err_rawdata;
492  }

If he->srcline is not NULL (it is not NULL if it is uninitialized rubbish),
it gets strdupped and strdupping a rubbish random string causes the problem.

Also, if you look at the commit 1fb7d06a509e, it adds the srcline property
into the struct, but not initializing it everywhere needed.

Committer notes:

Now I see, when using --ignore-callees=do_idle we end up here at line
2189 in add_callchain_ip():

2181         if (al.sym != NULL) {
2182                 if (perf_hpp_list.parent && !*parent &&
2183                     symbol__match_regex(al.sym, &parent_regex))
2184                         *parent = al.sym;
2185                 else if (have_ignore_callees && root_al &&
2186                   symbol__match_regex(al.sym, &ignore_callees_regex)) {
2187                         /* Treat this symbol as the root,
2188                            forgetting its callees. */
2189                         *root_al = al;
2190                         callchain_cursor_reset(cursor);
2191                 }
2192         }

And the al that doesn't have the ->srcline field initialized will be
copied to the root_al, so then, back to:

1211 int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
1212                          int max_stack_depth, void *arg)
1213 {
1214         int err, err2;
1215         struct map *alm = NULL;
1216
1217         if (al)
1218                 alm = map__get(al->map);
1219
1220         err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
1221                                         iter->evsel, al, max_stack_depth);
1222         if (err) {
1223                 map__put(alm);
1224                 return err;
1225         }
1226
1227         err = iter->ops->prepare_entry(iter, al);
1228         if (err)
1229                 goto out;
1230
1231         err = iter->ops->add_single_entry(iter, al);
1232         if (err)
1233                 goto out;
1234

That al at line 1221 is what hist_entry_iter__add() (called from
sample__resolve_callchain()) saw as 'root_al', and then:

        iter->ops->add_single_entry(iter, al);

will go on with al->srcline with a bogus value, I'll add the above
sequence to the cset and apply, thanks!

Signed-off-by: Michael Petlan <mpetlan@redhat.com>
CC: Milian Wolff <milian.wolff@kdab.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Fixes: 1fb7d06a509e ("perf report Use srcline from callchain for hist entries")
Link: https //lore.kernel.org/r/20210719145332.29747-1-mpetlan@redhat.com
Reported-by: Juri Lelli <jlelli@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf script: Fix ip display when type != attr->type
Adrian Hunter [Sat, 11 Sep 2021 13:30:53 +0000 (16:30 +0300)]
perf script: Fix ip display when type != attr->type

set_print_ip_opts() was not being called when type != attr->type
because there is not a one-to-one relationship between output types
and attr->type. That resulted in ip not printing.

The attr_type() function is removed, and the match of attr->type to
output type is corrected.

Example on ADL using taskset to select an atom cpu:

 # perf record -e cpu_atom/cpu-cycles/ taskset 0x1000 uname
 Linux
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.003 MB perf.data (7 samples) ]

 Before:

  # perf script | head
         taskset   428 [-01] 10394.179041:          1 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179043:          1 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179044:         11 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179045:        407 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179046:      16789 cpu_atom/cpu-cycles/:
         taskset   428 [-01] 10394.179052:     676300 cpu_atom/cpu-cycles/:
           uname   428 [-01] 10394.179278:    4079859 cpu_atom/cpu-cycles/:

 After:

  # perf script | head
         taskset   428 10394.179041:          1 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179043:          1 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179044:         11 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179045:        407 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179046:      16789 cpu_atom/cpu-cycles/:  ffffffff95a0bb97 __intel_pmu_enable_all.constprop.48+0x47 ([kernel.kallsyms])
         taskset   428 10394.179052:     676300 cpu_atom/cpu-cycles/:      7f829ef73800 cfree+0x0 (/lib/libc-2.32.so)
           uname   428 10394.179278:    4079859 cpu_atom/cpu-cycles/:  ffffffff95bae912 vma_interval_tree_remove+0x1f2 ([kernel.kallsyms])

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20210911133053.15682-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf annotate: Fix fused instr logic for assembly functions
Ravi Bangoria [Sat, 11 Sep 2021 04:38:53 +0000 (10:08 +0530)]
perf annotate: Fix fused instr logic for assembly functions

Some x86 microarchitectures fuse a subset of cmp/test/ALU instructions
with branch instructions, and thus perf annotate highlight such valid
pairs as fused.

When annotated with source, perf uses struct disasm_line to contain
either source or instruction line from objdump output. Usually, a C
statement generates multiple instructions which include such
cmp/test/ALU + branch instruction pairs. But in case of assembly
function, each individual assembly source line generate one
instruction.

The 'perf annotate' instruction fusion logic assumes the previous
disasm_line as the previous instruction line, which is wrong because,
for assembly function, previous disasm_line contains source line.  And
thus perf fails to highlight valid fused instruction pairs for assembly
functions.

Fix it by searching backward until we find an instruction line and
consider that disasm_line as fused with current branch instruction.

Before:
         │    cmpq    %rcx, RIP+8(%rsp)
    0.00 │      cmp    %rcx,0x88(%rsp)
         │    je      .Lerror_bad_iret      <--- Source line
    0.14 │   ┌──je     b4                   <--- Instruction line
         │   │movl    %ecx, %eax

After:
         │    cmpq    %rcx, RIP+8(%rsp)
    0.00 │   ┌──cmp    %rcx,0x88(%rsp)
         │   │je      .Lerror_bad_iret
    0.14 │   ├──je     b4
         │   │movl    %ecx, %eax

Reviewed-by: Jin Yao <yao.jin@linux.intel.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https //lore.kernel.org/r/20210911043854.8373-1-ravi.bangoria@amd.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 's390-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Sat, 18 Sep 2021 19:46:14 +0000 (12:46 -0700)]
Merge tag 's390-5.15-3' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix potential out-of-range access during secure boot facility
   detection.

 - Fully validate the VMA before calling follow_pte() in pci code.

 - Remove arch specific WARN_DYNAMIC_STACK config option.

 - Fix zcrypto kernel doc comments.

 - Update defconfigs.

* tag 's390-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: remove WARN_DYNAMIC_STACK
  s390/ap: fix kernel doc comments
  s390: update defconfigs
  s390/sclp: fix Secure-IPL facility detection
  s390/pci_mmio: fully validate the VMA before calling follow_pte()

3 years agoMerge tag 'devicetree-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 18 Sep 2021 19:40:55 +0000 (12:40 -0700)]
Merge tag 'devicetree-fixes-for-5.15-2' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:

 - Revert fw_devlink tracking 'phy-handle' links. This broke at least a
   few platforms. A better solution is being worked on.

 - Add Samsung UFS binding which fell thru the cracks

 - Doc reference fixes from Mauro

 - Fix for restricted DMA error handling

* tag 'devicetree-fixes-for-5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  dt-bindings: arm: Fix Toradex compatible typo
  of: restricted dma: Fix condition for rmem init
  dt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference
  dt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference
  dt-bindings: ufs: Add bindings for Samsung ufs host
  Revert "of: property: fw_devlink: Add support for "phy-handle" property"

3 years agotgafb: clarify dependencies
Linus Torvalds [Sat, 18 Sep 2021 18:15:01 +0000 (11:15 -0700)]
tgafb: clarify dependencies

The TGA boards were based on the DECchip 21030 PCI graphics accelerator
used mainly for alpha, and existed in a TURBOchannel (TC) version for
the DECstation (MIPS) workstations.

However, the config option for the TGA code is a bit confused, and says

depends on FB && (ALPHA || TC)

because people didn't really want to enable the option for random PCI
environments, so the "ALPHA" stands in for that case (while the TC case
is then the MIPS DECstation case).

So that config dependency is kind of a mixture of architecture and bus
choices.  But it's incorrect, in that there were non-PCI-based alpha
hardware, and then the driver just causes warnings:

  drivers/video/fbdev/tgafb.c:1532:13: error: ‘tgafb_unregister’ defined but not used [-Werror=unused-function]
   1532 | static void tgafb_unregister(struct device *dev)
        |             ^~~~~~~~~~~~~~~~
  drivers/video/fbdev/tgafb.c:1387:12: error: ‘tgafb_register’ defined but not used [-Werror=unused-function]
   1387 | static int tgafb_register(struct device *dev)
        |            ^~~~~~~~~~~~~~

so let's make the config option dependencies a bit more explict:

depends on FB
depends on PCI || TC
depends on ALPHA || TC

where that first "FB" is the software configuration dependency, the
second "PCI || TC" is the hardware bus dependency, while that final
"ALPHA || TC" dependency is the "don't bother asking except for these
situations.

We could make that third case have "COMPILE_TEST" as an option, and mark
the register/unregister functions as __maybe_unused, but I'm not sure
it's really worth it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: make 'Jensen' IO functions build again
Linus Torvalds [Sat, 18 Sep 2021 17:57:10 +0000 (10:57 -0700)]
alpha: make 'Jensen' IO functions build again

The Jensen IO functions are overly copmplicated because some of the IO
addresses refer to special 'local IO' ports, and they get accessed
differently.

That then makes gcc not actually inline them, and since they were marked
"extern inline" when included through the regular <asm/io.h> path, and
then only marked "inline" when included from sys_jensen.c, you never
necessarily got a body for the IO functions at all.

The intent of the sys_jensen.c code is to actually get the non-inlined
copy generated, so remove the 'inline' from the magic macro that is
supposed to sort this all out.

Also, do not mix 'extern inline' functions (that may or may not be
inlined and will not generate a function body if they are not) with
'static inline' (that _will_ generate a function body when not inlined).
Because gcc will complain about this situation:

   error: ‘jensen_bus_outb’ is static but used in inline function ‘jensen_outb’ which is not static

because gcc basically doesn't know whether to generate a body for that
static inline function or not for that call site.

So make all of these use that __EXTERN_INLINE marker.  Gcc will
generally not inline these things on use, and then generate the function
body out-of-line in sys_jensen.c.

This makes the core IO functions build for the alpha Jensen config.

Not that the rest then builds, because it turns out Jensen also doesn't
enable PCI, which then makes other drievrs very unhappy, but that's a
separate issue.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agospi: Fix tegra20 build with CONFIG_PM=n
Linus Torvalds [Sat, 18 Sep 2021 17:05:06 +0000 (10:05 -0700)]
spi: Fix tegra20 build with CONFIG_PM=n

Without CONFIG_PM enabled, the SET_RUNTIME_PM_OPS() macro ends up being
empty, and the only use of tegra_slink_runtime_{resume,suspend} goes
away, resulting in

  drivers/spi/spi-tegra20-slink.c:1200:12: error: ‘tegra_slink_runtime_resume’ defined but not used [-Werror=unused-function]
   1200 | static int tegra_slink_runtime_resume(struct device *dev)
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~
  drivers/spi/spi-tegra20-slink.c:1188:12: error: ‘tegra_slink_runtime_suspend’ defined but not used [-Werror=unused-function]
   1188 | static int tegra_slink_runtime_suspend(struct device *dev)
        |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~

mark the functions __maybe_unused to make the build happy.

This hits the alpha allmodconfig build (and others).

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agodt-bindings: arm: Fix Toradex compatible typo
David Heidelberg [Sun, 12 Sep 2021 16:51:20 +0000 (18:51 +0200)]
dt-bindings: arm: Fix Toradex compatible typo

Fix board compatible typo reported by dtbs_check.

Fixes: f4d1577e9bc6 ("dt-bindings: arm: Convert Tegra board/soc bindings to json-schema")
Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://lore.kernel.org/r/20210912165120.188490-1-david@ixit.cz
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agoof: restricted dma: Fix condition for rmem init
David Brazdil [Fri, 17 Sep 2021 13:14:23 +0000 (14:14 +0100)]
of: restricted dma: Fix condition for rmem init

of_dma_set_restricted_buffer fails to handle negative return values from
of_property_count_elems_of_size, e.g. when the property does not exist.
This results in an attempt to assign a non-existent reserved memory
region to the device and a warning being printed. Fix the condition to
take negative values into account.

Fixes: f3cfd136aef0 ("of: restricted dma: Don't fail device probe on rmem init failure")
Cc: Will Deacon <will@kernel.org>
Signed-off-by: David Brazdil <dbrazdil@google.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210917131423.2760155-1-dbrazdil@google.com
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agoMerge tag 'pm-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 17 Sep 2021 19:05:04 +0000 (12:05 -0700)]
Merge tag 'pm-5.15-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two cpufreq issues, one in the intel_pstate driver and one
  in the core.

  Specifics:

   - Prevent intel_pstate from avoiding to use HWP, even if instructed
     to do so via the kernel command line, when HWP has been enabled
     already by the platform firmware (Doug Smythies).

   - Prevent use-after-free from occurring in the schedutil cpufreq
     governor on exit by fixing a core helper function that attempts to
     access memory associated with a kobject after calling kobject_put()
     on it (James Morse)"

* tag 'pm-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: schedutil: Destroy mutex before kobject_put() frees the memory
  cpufreq: intel_pstate: Override parameters if HWP forced by BIOS

3 years agoMerge tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Fri, 17 Sep 2021 18:54:48 +0000 (11:54 -0700)]
Merge tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - page align size in sparc32 arch_dma_alloc (Andreas Larsson)

 - tone down a new dma-debug message (Hamza Mahfooz)

 - fix the kerneldoc for dma_map_sg_attrs (me)

* tag 'dma-mapping-5.15-1' of git://git.infradead.org/users/hch/dma-mapping:
  sparc32: page align size in arch_dma_alloc
  dma-debug: prevent an error message from causing runtime problems
  dma-mapping: fix the kerneldoc for dma_map_sg_attrs

3 years agoMerge tag 'pci-v5.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 17 Sep 2021 18:42:31 +0000 (11:42 -0700)]
Merge tag 'pci-v5.15-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Defer VPD sizing until we actually need the contents; fixes a
   boot-time slowdown reported by Dave Jones (Bjorn Helgaas)

 - Stop clobbering OF fwnodes when we look for an ACPI fwnode; fixes a
   virtio-iommu boot regression (Jean-Philippe Brucker)

 - Add AMD GPU multi-function power dependencies; fixes runtime power
   management, including GPU resume and temp and fan sensor issues (Evan
   Quan)

 - Update VMD maintainer to Nirmal Patel (Jon Derrick)

* tag 'pci-v5.15-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  MAINTAINERS: Add Nirmal Patel as VMD maintainer
  PCI: Add AMD GPU multi-function power dependencies
  PCI/ACPI: Don't reset a fwnode set by OF
  PCI/VPD: Defer VPD sizing until first access

3 years agoMerge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:23:44 +0000 (09:23 -0700)]
Merge tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull io_uring iov_iter retry fixes from Jens Axboe:
 "This adds a helper to save/restore iov_iter state, and modifies
  io_uring to use it.

  After that is done, we can now kill the iter->truncated addition that
  we added for this release. The io_uring change is being overly
  cautious with the save/restore/advance, but better safe than sorry and
  we can always improve that and reduce the overhead if it proves to be
  of concern. The only case to be worried about in this regard is huge
  IO, where iteration can take a while to iterate segments.

  I spent some time writing test cases, and expanded the coverage quite
  a bit from the last posting of this. liburing carries this regression
  test case now:

      https://git.kernel.dk/cgit/liburing/tree/test/file-verify.c

  which exercises all of this. It now also supports provided buffers,
  and explicitly tests for end-of-file/device truncation as well.

  On top of that, Pavel sanitized the IOPOLL retry path to follow the
  exact same pattern as normal IO"

* tag 'iov_iter.3-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  io_uring: move iopoll reissue into regular IO path
  Revert "iov_iter: track truncated size"
  io_uring: use iov_iter state save/restore helpers
  iov_iter: add helper to save iov_iter state

3 years agoMerge tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:19:59 +0000 (09:19 -0700)]
Merge tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull io_uring fixes from Jens Axboe:
 "Mostly fixes for regressions in this cycle, but also a few fixes that
  predate this release.

  The odd one out is a tweak to the direct files added in this release,
  where attempting to reuse a slot is allowed instead of needing an
  explicit removal of that slot first. It's a considerable improvement
  in usability to that API, hence I'm sending it for -rc2.

   - io-wq race fix and cleanup (Hao)

   - loop_rw_iter() type fix

   - SQPOLL max worker race fix

   - Allow poll arm for O_NONBLOCK files, fixing a case where it's
     impossible to properly use io_uring if you cannot modify the file
     flags

   - Allow direct open to simply reuse a slot, instead of needing it
     explicitly removed first (Pavel)

   - Fix a case where we missed signal mask restoring in cqring_wait, if
     we hit -EFAULT (Xiaoguang)"

* tag 'io_uring-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  io_uring: allow retry for O_NONBLOCK if async is supported
  io_uring: auto-removal for direct open/accept
  io_uring: fix missing sigmask restore in io_cqring_wait()
  io_uring: pin SQPOLL data before unlocking ring lock
  io-wq: provide IO_WQ_* constants for IORING_REGISTER_IOWQ_MAX_WORKERS arg items
  io-wq: fix potential race of acct->nr_workers
  io-wq: code clean of io_wqe_create_worker()
  io_uring: ensure symmetry in handling iter types in loop_rw_iter()

3 years agoMerge tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 17 Sep 2021 16:16:59 +0000 (09:16 -0700)]
Merge tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:

 - NVMe pull request via Christoph:
       - fix ANA state updates when a namespace is not present (Anton
         Eidelman)
       - nvmet: fix a width vs precision bug in
         nvmet_subsys_attr_serial_show (Dan Carpenter)
       - avoid race in shutdown namespace removal (Daniel Wagner)
       - fix io_work priority inversion in nvme-tcp (Keith Busch)
       - destroy cm id before destroy qp to avoid use after free (Ruozhu
         Li)

 - blk-integrity profile registration fixes (Christoph, Lihong)

 - blk-cgroup UAF fix (Li)

 - blk-mq tag iterator fix (Ming)

 - blkcg memory leak fix (Yanfei)

* tag 'block-5.15-2021-09-17' of git://git.kernel.dk/linux-block:
  blk-cgroup: fix UAF by grabbing blkcg lock before destroying blkg pd
  blkcg: fix memory leak in blk_iolatency_init
  nvme: remove the call to nvme_update_disk_info in nvme_ns_remove
  block: flush the integrity workqueue in blk_integrity_unregister
  block: check if a profile is actually registered in blk_integrity_unregister
  nvme-tcp: fix io_work priority inversion
  nvme-rdma: destroy cm id before destroy qp to avoid use after free
  nvme-multipath: fix ANA state updates when a namespace is not present
  nvme: avoid race in shutdown namespace removal
  nvmet: fix a width vs precision bug in nvmet_subsys_attr_serial_show()
  blk-mq: avoid to iterate over stale request

3 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 17 Sep 2021 15:59:27 +0000 (08:59 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes and cleanups from Catalin Marinas:

 - Fix the memset() size when re-initialising the SVE state.

 - Mark __stack_chk_guard as __ro_after_init.

 - Remove duplicate include.

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Mark __stack_chk_guard as __ro_after_init
  arm64/kernel: remove duplicate include in process.c
  arm64/sve: Use correct size when reinitialising SVE state

3 years agoMerge tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Sep 2021 15:31:49 +0000 (08:31 -0700)]
Merge tag 'for-linus-5.15b-rc2-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - The first hunk of a Xen swiotlb fixup series fixing multiple minor
   issues and doing some small cleanups

 - Some further Xen related fixes avoiding WARN() splats when running as
   Xen guests or dom0

 - A Kconfig fix allowing the pvcalls frontend to be built as a module

* tag 'for-linus-5.15b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  swiotlb-xen: drop DEFAULT_NSLABS
  swiotlb-xen: arrange to have buffer info logged
  swiotlb-xen: drop leftover __ref
  swiotlb-xen: limit init retries
  swiotlb-xen: suppress certain init retries
  swiotlb-xen: maintain slab count properly
  swiotlb-xen: fix late init retry
  swiotlb-xen: avoid double free
  xen/pvcalls: backend can be a module
  xen: fix usage of pmd_populate in mremap for pv guests
  xen: reset legacy rtc flag for PV domU
  PM: base: power: don't try to use non-existing RTC for storing data
  xen/balloon: use a kernel thread instead a workqueue

3 years agodrm/panfrost: Calculate lock region size correctly
Steven Price [Fri, 3 Sep 2021 09:49:57 +0000 (10:49 +0100)]
drm/panfrost: Calculate lock region size correctly

It turns out that when locking a region, the region must be a naturally
aligned power of 2. The upshot of this is that if the desired region
crosses a 'large boundary' the region size must be increased
significantly to ensure that the locked region completely covers the
desired region. Previous calculations (including in kbase for the
proprietary driver) failed to take this into account.

Since it's known that the lock region must be naturally aligned we can
compute the required size by looking at the highest bit position which
changes between the start/end of the lock region (subtracting 1 from the
end because the end address is exclusive). The start address is then
aligned based on the size (this is technically unnecessary as the
hardware will ignore these bits, but the spec advises to do this "to
avoid confusion").

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210903094957.74560-1-steven.price@arm.com
3 years agovirtio-gpu: fix possible memory allocation failure
liuyuntao [Sat, 28 Aug 2021 10:43:21 +0000 (18:43 +0800)]
virtio-gpu: fix possible memory allocation failure

When kmem_cache_zalloc in virtio_gpu_get_vbuf fails, it will return
an error code. But none of its callers checks this error code, and
a core dump will take place.

Considering many of its callers can't handle such error, I add
a __GFP_NOFAIL flag when calling kmem_cache_zalloc to make sure
it won't fail, and delete those unused error handlings.

Fixes: dc5698e80cf724 ("Add virtio gpu driver.")
Signed-off-by: Yuntao Liu <liuyuntao10@huawei.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210828104321.3410312-1-liuyuntao10@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
3 years agodt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference
Mauro Carvalho Chehab [Thu, 16 Sep 2021 09:55:02 +0000 (11:55 +0200)]
dt-bindings: arm: mediatek: mmsys: update mediatek,mmsys.yaml reference

Changeset cba3c40d1f97 ("dt-bindings: arm: mediatek: mmsys: convert to YAML format")
renamed: Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt
to: Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.yaml.

Update its cross-reference accordingly.

Fixes: cba3c40d1f97 ("dt-bindings: arm: mediatek: mmsys: convert to YAML format")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/a87eb079a73e8ab41cdf6e40e80b1d1f868da6bd.1631785820.git.mchehab+huawei@kernel.org
3 years agodt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference
Mauro Carvalho Chehab [Thu, 16 Sep 2021 09:55:01 +0000 (11:55 +0200)]
dt-bindings: net: dsa: sja1105: update nxp,sja1105.yaml reference

Changeset 62568bdbe6f6 ("dt-bindings: net: dsa: sja1105: convert to YAML schema")
renamed: Documentation/devicetree/bindings/net/dsa/sja1105.txt
to: Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml.

Update its cross-reference accordingly.

Fixes: 62568bdbe6f6 ("dt-bindings: net: dsa: sja1105: convert to YAML schema")
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/994ce6c6358746ff600459822b9f6e336db933c9.1631785820.git.mchehab+huawei@kernel.org
3 years agoMerge tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Thu, 16 Sep 2021 20:28:52 +0000 (13:28 -0700)]
Merge tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Slightly busier than usual rc2, but mostly scattered amdgpu fixes,
  some i915 and etnaviv resolves an MMU/runtime PM blowup.

  amdgpu:
   - UBSAN fix
   - Powerplay table update fix
   - Fix use after free in BO moves
   - Debugfs init fixes
   - vblank workqueue fixes for headless devices
   - FPU fixes
   - sysfs_emit fixes
   - SMU updates for cyan skillfish
   - Backlight fixes when DMCU is not initialized
   - DP MST fixes
   - HDCP compliance fix
   - Link training fix
   - Runtime pm fix
   - Panel orientation fixes
   - Display GPUVM fix for yellow carp
   - Add missing license

  amdkfd:
   - Drop PCI atomics requirement if proper firmware is available
   - Suspend/resume fixes for IOMMUv2 cases

  radeon:
   - AGP fix

  i915:
   - Propagate DP link training error returns
   - Use max link params for eDP 1.3 and earlier
   - Build warning fixes
   - Gem selftest fixes
   - Ensure wakeref is held before hardware access

  etnaviv:
   - MMU context vs runtime PM fix"

* tag 'drm-fixes-2021-09-17' of git://anongit.freedesktop.org/drm/drm: (44 commits)
  drm/amdgpu/display: add a proper license to dc_link_dp.c
  drm/amd/display: Fix white screen page fault for gpuvm
  amd/display: enable panel orientation quirks
  drm/amdgpu: Demote TMZ unsupported log message from warning to info
  drm/amdgpu: Drop inline from amdgpu_ras_eeprom_max_record_count
  drm/amd/pm: fix runpm hang when amdgpu loaded prior to sound driver
  drm/radeon: pass drm dev radeon_agp_head_init directly
  drm/amdgpu: move iommu_resume before ip init/resume
  drm/amdgpu: add amdgpu_amdkfd_resume_iommu
  drm/amdkfd: separate kfd_iommu_resume from kfd_resume
  drm/amd/display: Link training retry fix for abort case
  drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo
  drm/amd/display: dsc mst 2 4K displays go dark with 2 lane HBR3
  drm/amd/display: Get backlight from PWM if DMCU is not initialized
  drm/amdkfd: make needs_pcie_atomics FW-version dependent
  drm/amdgpu: add manual sclk/vddc setting support for cyan skilfish(v3)
  drm/amdgpu: add some pptable funcs for cyan skilfish(v3)
  drm/amdgpu: update SMU driver interface for cyan skilfish(v3)
  drm/amdgpu: update SMU PPSMC for cyan skilfish
  drm/amdgpu: fix sysfs_emit/sysfs_emit_at warnings(v2)
  ...

3 years agoMerge tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 16 Sep 2021 20:05:42 +0000 (13:05 -0700)]
Merge tag 'net-5.15-rc2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bpf.

  Current release - regressions:

   - vhost_net: fix OoB on sendmsg() failure

   - mlx5: bridge, fix uninitialized variable usage

   - bnxt_en: fix error recovery regression

  Current release - new code bugs:

   - bpf, mm: fix lockdep warning triggered by stack_map_get_build_id_offset()

  Previous releases - regressions:

   - r6040: restore MDIO clock frequency after MAC reset

   - tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()

   - dsa: flush switchdev workqueue before tearing down CPU/DSA ports

  Previous releases - always broken:

   - ptp: dp83640: don't define PAGE0, avoid compiler warning

   - igc: fix tunnel segmentation offloads

   - phylink: update SFP selected interface on advertising changes

   - stmmac: fix system hang caused by eee_ctrl_timer during suspend/resume

   - mlx5e: fix mutual exclusion between CQE compression and HW TS

  Misc:

   - bpf, cgroups: fix cgroup v2 fallback on v1/v2 mixed mode

   - sfc: fallback for lack of xdp tx queues

   - hns3: add option to turn off page pool feature"

* tag 'net-5.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (67 commits)
  mlxbf_gige: clear valid_polarity upon open
  igc: fix tunnel offloading
  net/{mlx5|nfp|bnxt}: Remove unnecessary RTNL lock assert
  net: wan: wanxl: define CROSS_COMPILE_M68K
  selftests: nci: replace unsigned int with int
  net: dsa: flush switchdev workqueue before tearing down CPU/DSA ports
  Revert "net: phy: Uniform PHY driver access"
  net: dsa: destroy the phylink instance on any error in dsa_slave_phy_setup
  ptp: dp83640: don't define PAGE0
  bnx2x: Fix enabling network interfaces without VFs
  Revert "Revert "ipv4: fix memory leaks in ip_cmsg_send() callers""
  tcp: fix tp->undo_retrans accounting in tcp_sacktag_one()
  net-caif: avoid user-triggerable WARN_ON(1)
  bpf, selftests: Add test case for mixed cgroup v1/v2
  bpf, selftests: Add cgroup v1 net_cls classid helpers
  bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode
  bpf: Add oversize check before call kvcalloc()
  net: hns3: fix the timing issue of VF clearing interrupt sources
  net: hns3: fix the exception when query imp info
  net: hns3: disable mac in flr process
  ...

3 years agoMerge tag 'amd-drm-fixes-5.15-2021-09-16' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Thu, 16 Sep 2021 19:58:55 +0000 (05:58 +1000)]
Merge tag 'amd-drm-fixes-5.15-2021-09-16' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.15-2021-09-16:

amdgpu:
- UBSAN fix
- Powerplay table update fix
- Fix use after free in BO moves
- Debugfs init fixes
- vblank workqueue fixes for headless devices
- FPU fixes
- sysfs_emit fixes
- SMU updates for cyan skillfish
- Backlight fixes when DMCU is not initialized
- DP MST fixes
- HDCP compliance fix
- Link training fix
- Runtime pm fix
- Panel orientation fixes
- Display GPUVM fix for yellow carp
- Add missing license

amdkfd:
- Drop PCI atomics requirement if proper firmware is available
- Suspend/resume fixes for IOMMUv2 cases

radeon:
- AGP fix

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916140611.59816-1-alexander.deucher@amd.com
3 years agoMerge tag 'drm-intel-fixes-2021-09-16' of ssh://git.freedesktop.org/git/drm/drm-intel...
Dave Airlie [Thu, 16 Sep 2021 19:53:52 +0000 (05:53 +1000)]
Merge tag 'drm-intel-fixes-2021-09-16' of ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.15-rc2:
- Propagate DP link training error returns
- Use max link params for eDP 1.3 and earlier
- Build warning fixes
- Gem selftest fixes
- Ensure wakeref is held before hardware access

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8735q4wsu7.fsf@intel.com
3 years agonet: 6pack: Fix tx timeout and slot time
Guenter Roeck [Thu, 9 Sep 2021 03:57:43 +0000 (20:57 -0700)]
net: 6pack: Fix tx timeout and slot time

tx timeout and slot time are currently specified in units of HZ.  On
Alpha, HZ is defined as 1024.  When building alpha:allmodconfig, this
results in the following error message.

  drivers/net/hamradio/6pack.c: In function 'sixpack_open':
  drivers/net/hamradio/6pack.c:71:41: error:
   unsigned conversion from 'int' to 'unsigned char'
   changes value from '256' to '0'

In the 6PACK protocol, tx timeout is specified in units of 10 ms and
transmitted over the wire:

    https://www.linux-ax25.org/wiki/6PACK

Defining a value dependent on HZ doesn't really make sense, and
presumably comes from the (very historical) situation where HZ was
originally 100.

Note that the SIXP_SLOTTIME use explicitly is about 10ms granularity:

        mod_timer(&sp->tx_t, jiffies + ((when + 1) * HZ) / 100);

and the SIXP_TXDELAY walue is sent as a byte over the wire.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm...
Dave Airlie [Thu, 16 Sep 2021 19:30:56 +0000 (05:30 +1000)]
Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes

Fixes a very annoying issue where the driver view of the MMU state gets
out of sync with the actual hardware state across a runtime PM cycle,
so we end up restarting the GPU with the wrong (potentially already
freed) MMU context. Hilarity ensues.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/729a561b6cfed090457bcc856a9e14ed6209fe21.camel@pengutronix.de
3 years agodrm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused
Arnd Bergmann [Tue, 28 Apr 2020 21:31:24 +0000 (23:31 +0200)]
drm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused

With the new static annotation, the compiler warns when the functions
are actually unused:

   drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: error: 'cdn_dp_resume' defined but not used [-Werror=unused-function]
    1123 | static int cdn_dp_resume(struct device *dev)
         |            ^~~~~~~~~~~~~

Mark them __maybe_unused to suppress that warning as well.

[ Not so 'new' static annotations any more, and I removed the part of
  the patch that added __maybe_unused to cdn_dp_suspend(), because it's
  used by the shutdown/remove code.

  So only the resume function ends up possibly unused if CONFIG_PM isn't
  set     - Linus ]

Fixes: 7c49abb4c2f8 ("drm/rockchip: cdn-dp-core: Make cdn_dp_core_suspend/resume static")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agocpufreq: vexpress: Drop unused variable
Guenter Roeck [Thu, 9 Sep 2021 18:47:14 +0000 (11:47 -0700)]
cpufreq: vexpress: Drop unused variable

arm:allmodconfig fails to build with the following error.

  drivers/cpufreq/vexpress-spc-cpufreq.c:454:13: error:
unused variable 'cur_cluster'

Remove the unused variable.

Fixes: bb8c26d9387f ("cpufreq: vexpress: Set CPUFREQ_IS_COOLING_DEV flag")
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoalpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile
Guenter Roeck [Thu, 9 Sep 2021 05:00:33 +0000 (22:00 -0700)]
alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile

Some drivers pass a pointer to volatile data to virt_to_bus() and
virt_to_phys(), and that works fine.  One exception is alpha.  This
results in a number of compile errors such as

  drivers/net/wan/lmc/lmc_main.c: In function 'lmc_softreset':
  drivers/net/wan/lmc/lmc_main.c:1782:50: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

  drivers/atm/ambassador.c: In function 'do_loader_command':
  drivers/atm/ambassador.c:1747:58: error:
passing argument 1 of 'virt_to_bus' discards 'volatile'
qualifier from pointer target type

Declare the parameter of virt_to_phys and virt_to_bus as pointer to
volatile to fix the problem.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years ago3com 3c515: make it compile on 64-bit architectures
Linus Torvalds [Thu, 16 Sep 2021 18:14:47 +0000 (11:14 -0700)]
3com 3c515: make it compile on 64-bit architectures

This driver isn't enabled most places because of the ISA config
dependency, but alpha still has it.  And I think the 'Jensen' actually
did have an ISA slot.

However, it doesn't build cleanly, because the "Vortex bus master" code
just casts the skb->data pointer to 'int':

        outl((int) (skb->data), ioaddr + Wn7_MasterAddr);

which is all kinds of broken.  Even on a good old traditional PC/AT it
would be broken because the high bits will be random kernel address
bits, but presumably the hardware ignores those bits.  I mean, it's ISA.
We're talking 16MB dma limits. The "good old days".

Make the build happy with this kind of craziness by using the proper
isa_virt_to_bus() handling that the full bus master code uses anyway
(the Vortex bus mastering is a limited special case).

Who knows, this might even work.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Thu, 16 Sep 2021 17:32:00 +0000 (10:32 -0700)]
Merge tag 'for-5.15/parisc-4' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fix from Helge Deller:
 "Fix a build warning when using the PAGE0 pointer"

* tag 'for-5.15/parisc-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Use absolute_pointer() to define PAGE0

3 years agoMerge tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 16 Sep 2021 17:26:48 +0000 (10:26 -0700)]
Merge tag 'm68k-for-v5.15-tag2' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:

 - Warning fixes to mitigate CONFIG_WERROR=y

* tag 'm68k-for-v5.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: mvme: Remove overdue #warnings in RTC handling
  m68k: Double cast io functions to unsigned long

3 years agoarm64: Mark __stack_chk_guard as __ro_after_init
Dan Li [Tue, 14 Sep 2021 09:44:02 +0000 (17:44 +0800)]
arm64: Mark __stack_chk_guard as __ro_after_init

__stack_chk_guard is setup once while init stage and never changed
after that.

Although the modification of this variable at runtime will usually
cause the kernel to crash (so does the attacker), it should be marked
as __ro_after_init, and it should not affect performance if it is
placed in the ro_after_init section.

Signed-off-by: Dan Li <ashimida@linux.alibaba.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/1631612642-102881-1-git-send-email-ashimida@linux.alibaba.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agoarm64/kernel: remove duplicate include in process.c
Lv Ruyi [Thu, 2 Sep 2021 01:11:26 +0000 (18:11 -0700)]
arm64/kernel: remove duplicate include in process.c

Remove all but the first include of linux/sched.h from process.c

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210902011126.29828-1-lv.ruyi@zte.com.cn
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agoarm64/sve: Use correct size when reinitialising SVE state
Mark Brown [Thu, 9 Sep 2021 16:53:56 +0000 (17:53 +0100)]
arm64/sve: Use correct size when reinitialising SVE state

When we need a buffer for SVE register state we call sve_alloc() to make
sure that one is there. In order to avoid repeated allocations and frees
we keep the buffer around unless we change vector length and just memset()
it to ensure a clean register state. The function that deals with this
takes the task to operate on as an argument, however in the case where we
do a memset() we initialise using the SVE state size for the current task
rather than the task passed as an argument.

This is only an issue in the case where we are setting the register state
for a task via ptrace and the task being configured has a different vector
length to the task tracing it. In the case where the buffer is larger in
the traced process we will leak old state from the traced process to
itself, in the case where the buffer is smaller in the traced process we
will overflow the buffer and corrupt memory.

Fixes: bc0ee4760364 ("arm64/sve: Core task context handling")
Cc: <stable@vger.kernel.org> # 4.15.x
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210909165356.10675-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
3 years agodt-bindings: ufs: Add bindings for Samsung ufs host
Alim Akhtar [Wed, 15 Sep 2021 11:18:44 +0000 (20:18 +0900)]
dt-bindings: ufs: Add bindings for Samsung ufs host

This patch adds DT bindings for Samsung ufs hci

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20210915111844.42752-1-chanho61.park@samsung.com
Signed-off-by: Rob Herring <robh@kernel.org>
3 years agodrm/amdgpu/display: add a proper license to dc_link_dp.c
Alex Deucher [Tue, 14 Sep 2021 14:50:47 +0000 (10:50 -0400)]
drm/amdgpu/display: add a proper license to dc_link_dp.c

Was missing.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agodrm/amd/display: Fix white screen page fault for gpuvm
Nicholas Kazlauskas [Mon, 13 Sep 2021 18:56:44 +0000 (14:56 -0400)]
drm/amd/display: Fix white screen page fault for gpuvm

[Why]
The "base_addr_is_mc_addr" field was added for dcn3.1 support but
pa_config was never updated to set it to false.

Uninitialized memory causes it to be set to true which results in
address mistranslation and white screen.

[How]
Use memset to ensure all fields are initialized to 0 by default.

Fixes: 64b1d0e8d500 ("drm/amd/display: Add DCN3.1 HWSEQ")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agoamd/display: enable panel orientation quirks
Simon Ser [Fri, 10 Sep 2021 15:37:41 +0000 (15:37 +0000)]
amd/display: enable panel orientation quirks

This patch allows panel orientation quirks from DRM core to be
used. They attach a DRM connector property "panel orientation"
which indicates in which direction the panel has been mounted.
Some machines have the internal screen mounted with a rotation.

Since the panel orientation quirks need the native mode from the
EDID, check for it in amdgpu_dm_connector_ddc_get_modes.

Signed-off-by: Simon Ser <contact@emersion.fr>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>