Shawn Guo [Mon, 1 Mar 2021 07:54:06 +0000 (15:54 +0800)]
i2c: qcom-geni: add ACPI device id for sc8180x
It adds ACPI device id for sc8180x platform, so that the devices can be
probed for ACPI boot.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Sun, 29 Oct 2023 19:41:43 +0000 (20:41 +0100)]
Documentation: i2c: add fault code for not supporting 10 bit addresses
Document the specific fault code when 10 bit addresses cannot be
supported. It is used for years, only the documentation slipped through
the cracks.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Axel Lin [Wed, 13 Apr 2016 00:54:30 +0000 (08:54 +0800)]
i2c: sun6i-p2wi: Prevent potential division by zero
Make sure we don't OOPS in case clock-frequency is set to 0 in a DT. The
variable set here is later used as a divisor.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
ye xingchen [Wed, 7 Dec 2022 02:48:33 +0000 (10:48 +0800)]
i2c: mux: demux-pinctrl: Convert to use sysfs_emit_at() API
Follow the advice of the Documentation/filesystems/sysfs.rst and show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
[wsa: proper subject prefix]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Sun, 15 Oct 2023 21:36:17 +0000 (23:36 +0200)]
i2c: i801: Use new helper acpi_use_parent_companion
Use new helper acpi_use_parent_companion to simplify the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Sun, 15 Oct 2023 21:34:25 +0000 (23:34 +0200)]
ACPI: Add helper acpi_use_parent_companion
In several drivers devices use the ACPI companion of the parent.
Add a helper for this use case to avoid code duplication.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Sat, 28 Oct 2023 12:23:08 +0000 (14:23 +0200)]
MAINTAINERS: add YAML file for i2c-demux-pinctrl
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Daniel Mack [Wed, 18 Oct 2023 09:46:13 +0000 (11:46 +0200)]
i2c: core: fix lockdep warning for sparsely nested adapter chain
When adapters are chained in a sparse manner (with intermediate MFD devices,
for instance) the code currently fails to use the correct subclass for
the adapter's bus_lock which leads to false-positive lockdep warnings.
Fix this by walking the entire pedigree of the device and count all
adapters along the way instead of just checking the immediate parent.
Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Randy Dunlap [Thu, 26 Oct 2023 05:39:18 +0000 (22:39 -0700)]
i2c: axxia: eliminate kernel-doc warnings
Add kernel-doc for 'slave' and 'irq' in struct axxia_i2c_dev.
Drop kernel-doc notation ("/**") for static functions since they
are not usually documented with kernel-doc.
Prevents these kernel-doc warnings:
i2c-axxia.c:150: warning: Function parameter or member 'slave' not described in 'axxia_i2c_dev'
i2c-axxia.c:150: warning: Function parameter or member 'irq' not described in 'axxia_i2c_dev'
i2c-axxia.c:172: warning: Function parameter or member 'ns' not described in 'ns_to_clk'
i2c-axxia.c:172: warning: Function parameter or member 'clk_mhz' not described in 'ns_to_clk'
i2c-axxia.c:172: warning: No description found for return value of 'ns_to_clk'
i2c-axxia.c:271: warning: Function parameter or member 'idev' not described in 'axxia_i2c_empty_rx_fifo'
i2c-axxia.c:271: warning: No description found for return value of 'axxia_i2c_empty_rx_fifo'
i2c-axxia.c:303: warning: Function parameter or member 'idev' not described in 'axxia_i2c_fill_tx_fifo'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/all/202310181049.Vo62moV1-lkp@intel.com/
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Geert Uytterhoeven [Mon, 23 Oct 2023 13:53:00 +0000 (15:53 +0200)]
dt-bindings: i2c: i2c-demux-pinctrl: Convert to json-schema
Convert the pinctrl-based I2C bus demultiplexer Device Tree binding
documentation to json-schema.
Update the example to match reality.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Andi Shyti [Sun, 11 Jun 2023 22:56:59 +0000 (00:56 +0200)]
i2c: stm32f7: Use devm_clk_get_enabled()
Replace the pair of functions, devm_clk_get() and
clk_prepare_enable(), with a single function
devm_clk_get_enabled().
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Andi Shyti [Sun, 11 Jun 2023 22:56:58 +0000 (00:56 +0200)]
i2c: stm32f4: Use devm_clk_get_enabled()
Replace the pair of functions, devm_clk_get() and
clk_prepare_enable(), with a single function
devm_clk_get_enabled().
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Alain Volmat [Mon, 23 Oct 2023 08:50:15 +0000 (10:50 +0200)]
i2c: stm32f7: add description of atomic in struct stm32f7_i2c_dev
Add missing description of the atomic boolean in struct stm32f7_i2c_dev.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Fri, 29 Sep 2023 09:19:52 +0000 (11:19 +0200)]
i2c: fix memleak in i2c_new_client_device()
Yang Yingliang reported a memleak:
===
I got memory leak as follows when doing fault injection test:
unreferenced object 0xffff888014aec078 (size 8):
comm "xrun", pid 356, jiffies
4294910619 (age 16.332s)
hex dump (first 8 bytes):
31 2d 30 30 31 63 00 00 1-001c..
backtrace:
[<
00000000eb56c0a9>] __kmalloc_track_caller+0x1a6/0x300
[<
000000000b220ea3>] kvasprintf+0xad/0x140
[<
00000000b83203e5>] kvasprintf_const+0x62/0x190
[<
000000002a5eab37>] kobject_set_name_vargs+0x56/0x140
[<
00000000300ac279>] dev_set_name+0xb0/0xe0
[<
00000000b66ebd6f>] i2c_new_client_device+0x7e4/0x9a0
If device_register() returns error in i2c_new_client_device(),
the name allocated by i2c_dev_set_name() need be freed. As
comment of device_register() says, it should use put_device()
to give up the reference in the error path.
===
I think this solution is less intrusive and more robust than he
originally proposed solutions, though.
Reported-by: Yang Yingliang <yangyingliang@huawei.com>
Closes: http://patchwork.ozlabs.org/project/linux-i2c/patch/20221124085448.3620240-1-yangyingliang@huawei.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Camel Guo [Mon, 12 Sep 2022 08:59:43 +0000 (10:59 +0200)]
i2c: exynos5: Calculate t_scl_l, t_scl_h according to i2c spec
Previously the duty cycle was divided equally into h_scl_l, t_scl_h.
This makes the low period of the SCL clock in Fast Mode is only 1.25us
which is way lower than the minimal value (1.3) specified in i2c
specification. In order to make sure t_scl_l, t_scl_h always fullfill
i2c specification, this commit calculates t_scl_l using this formula:
t_scl_l = clk_cycle *
((t_low_min + (scl_clock - t_low_min - t_high_min) / 2) / scl_clock)
where:
t_low_min is the minimal value of low period of the SCL clock in us;
t_high_min is the minimal value of high period of the SCL clock in us;
scl_clock is converted from SCL clock frequency into us.
Signed-off-by: Camel Guo <camel.guo@axis.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Tue, 10 Oct 2023 19:27:44 +0000 (21:27 +0200)]
i2c: i801: Simplify class-based client device instantiation
Now that the legacy eeprom driver was removed, the only remaining i2c
client driver with class SPD autodetection is jc42, and this driver
supports also class HWMON. Therefore we can remove class SPD from the
supported classes of the i801 adapter driver.
Legacy class-based instantiation shouldn't be used in new code, so I
think we can remove also the generic logic that ensures that supported
classes of parent and muxed adapters don't overlap.
Note: i801 parent supports just class HWMON now, and muxed childs
class SPD, so the supported classes don't overlap.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Marek Szyprowski [Fri, 6 Oct 2023 15:08:03 +0000 (17:08 +0200)]
i2c: exynos5: add support for atomic transfers
Add support for atomic transfers using polling mode with interrupts
intentionally disabled. This removes the warning introduced by commit
63b96983a5dd ("i2c: core: introduce callbacks for atomic transfers")
during system reboot and power-off.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Andi Shyti [Sun, 11 Jun 2023 22:56:50 +0000 (00:56 +0200)]
i2c: at91-core: Use devm_clk_get_enabled()
Replace the pair of functions, devm_clk_get() and
clk_prepare_enable(), with a single function
devm_clk_get_enabled().
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
[wsa: rebased]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Sat, 21 Oct 2023 17:58:59 +0000 (19:58 +0200)]
Merge tag 'at24-updates-for-v6.7' of git://git./linux/kernel/git/brgl/linux into i2c/for-mergewindow
at24 updates for v6.7
- support the write-lockable pages on two more models
- drop at24_get_chip_data()
- use the new __counted_by() attribute in struct at24_data
Alexander Stein [Fri, 13 Oct 2023 06:30:08 +0000 (08:30 +0200)]
eeprom: at24: add ST M24C64-D Additional Write lockable page support
The ST M24C64-D behaves as a regular M24C64, except for the -D variant
which uses up another I2C address for Additional Write lockable page.
This page is 32 Bytes long and can contain additional data. Add entry
for it, so users can describe that page in DT. Note that users still
have to describe the main M24C64 area separately as that is on separate
I2C address from this page.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Alexander Stein [Fri, 13 Oct 2023 06:30:07 +0000 (08:30 +0200)]
dt-bindings: at24: add ST M24C64-D Additional Write lockable page
The ST M24C64-D behaves as a regular M24C64, except for the -D variant
which uses up another I2C address for Additional Write lockable page.
This page is 32 Bytes long and can contain additional data. Document
compatible string for it, so users can describe that page in DT. Note
that users still have to describe the main M24C64 area separately as
that is on separate I2C address from this page.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Marek Vasut [Tue, 10 Oct 2023 19:09:26 +0000 (21:09 +0200)]
eeprom: at24: add ST M24C32-D Additional Write lockable page support
The ST M24C32-D behaves as a regular M24C32, except for the -D variant
which uses up another I2C address for Additional Write lockable page.
This page is 32 Bytes long and can contain additional data. Add entry
for it, so users can describe that page in DT. Note that users still
have to describe the main M24C32 area separately as that is on separate
I2C address from this page.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Marek Vasut [Tue, 10 Oct 2023 19:09:25 +0000 (21:09 +0200)]
dt-bindings: at24: add ST M24C32-D Additional Write lockable page
The ST M24C32-D behaves as a regular M24C32, except for the -D variant
which uses up another I2C address for Additional Write lockable page.
This page is 32 Bytes long and can contain additional data. Document
compatible string for it, so users can describe that page in DT. Note
that users still have to describe the main M24C32 area separately as
that is on separate I2C address from this page.
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Wolfram Sang [Wed, 11 Oct 2023 16:43:58 +0000 (18:43 +0200)]
Revert "dt-bindings: i2c: qcom-cci: Document sc8280xp compatible"
This reverts commit
ae2a1f0f2cb52e15cf45508f499fcbfd6637bc56. An updated
series was sent. And this patch was not needed anymore because another
compatible entry was reused.
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Marek Szyprowski [Fri, 6 Oct 2023 14:41:17 +0000 (16:41 +0200)]
i2c: brcmstb: Add support for atomic transfers
Add support for atomic transfers using polling mode with interrupts
intentionally disabled to get rid of the warning introduced by commit
63b96983a5dd ("i2c: core: introduce callbacks for atomic transfers")
during system reboot and power-off.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Jarkko Nikula [Mon, 2 Oct 2023 08:28:04 +0000 (11:28 +0300)]
i2c: i801: Add support for Intel Birch Stream SoC
Add SMBus PCI ID on Intel Birch Stream SoC.
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Bryan O'Donoghue [Fri, 6 Oct 2023 12:01:55 +0000 (13:01 +0100)]
dt-bindings: i2c: qcom-cci: Document sc8280xp compatible
Add sc8280xp compatible consistent with recent CAMSS CCI interfaces.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
[wsa: rebased]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Rob Herring [Fri, 6 Oct 2023 22:44:46 +0000 (17:44 -0500)]
i2c: Use device_get_match_data()
Use preferred device_get_match_data() instead of of_match_device() to
get the driver match data. With this, adjust the includes to explicitly
include the correct headers.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Luca Weiss [Mon, 2 Oct 2023 06:55:30 +0000 (08:55 +0200)]
dt-bindings: i2c: qcom-cci: Document SC7280 compatible
Document the compatible for the CCI block found on SC7280 SoC.
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Dan Carpenter [Wed, 27 Sep 2023 12:38:36 +0000 (15:38 +0300)]
i2c: rcar: fix error code in probe()
Return an error code if devm_reset_control_get_exclusive() fails.
The current code returns success.
Fixes: 0e864b552b23 ("i2c: rcar: reset controller is mandatory for Gen3+")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Sean Nyekjaer [Wed, 16 Aug 2023 08:05:52 +0000 (10:05 +0200)]
i2c: stm32f7: Add atomic_xfer method to driver
Add an atomic_xfer method to the driver so that it behaves correctly
when controlling a PMIC that is responsible for device shutdown.
The atomic_xfer method added is similar to the one from the i2c-mv64xxx
driver. When running an atomic_xfer a bool flag in the driver data is
set, the interrupt is not unmasked on transfer start, and the IRQ
handler is manually invoked while waiting for pending transfers to
complete.
Signed-off-by: Sean Nyekjaer <sean@geanix.com>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Kees Cook [Fri, 22 Sep 2023 17:51:55 +0000 (10:51 -0700)]
eeprom: at24: Annotate struct at24_data with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct at24_data.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Kees Cook [Fri, 22 Sep 2023 17:54:25 +0000 (10:54 -0700)]
i2c: Annotate struct i2c_atr with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct i2c_atr.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Kees Cook [Fri, 22 Sep 2023 17:49:59 +0000 (10:49 -0700)]
i2c: mux: demux-pinctrl: Annotate struct i2c_demux_pinctrl_priv with __counted_by
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct i2c_demux_pinctrl_priv.
Additionally, since the element count member must be set before accessing
the annotated flexible array member, move its initialization earlier.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
[wsa: improved blank lines]
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Justin Stitt [Wed, 20 Sep 2023 11:07:35 +0000 (11:07 +0000)]
i2c: powermac: replace deprecated strncpy
`strncpy` is deprecated for use on NUL-terminated destination strings [1].
We should prefer more robust and less ambiguous string interfaces.
`info.type` is expected to be NUL-terminated judging by its use in
`i2c_new_client_device()` wherein it is used to populate `client->name`:
| strscpy(client->name, info->type, sizeof(client->name));
NUL-padding is not required and even if it was, `client` is already
zero-initialized.
Considering the two points from above, a suitable replacement is
`strscpy` [2] due to the fact that it guarantees NUL-termination on the
destination buffer without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Justin Stitt [Wed, 20 Sep 2023 08:08:52 +0000 (08:08 +0000)]
i2c: cp2615: replace deprecated strncpy with strscpy
`strncpy` is deprecated for use on NUL-terminated destination strings [1].
We should prefer more robust and less ambiguous string interfaces.
We expect name to be NUL-terminated based on its numerous uses with
functions that expect NUL-terminated strings.
For example in i2c-core-base.c +1533:
| dev_dbg(&adap->dev, "adapter [%s] registered\n", adap->name);
NUL-padding is not required as `adap` is already zero-alloacted with:
| adap = devm_kzalloc(&usbif->dev, sizeof(struct i2c_adapter), GFP_KERNEL);
With the above in mind, a suitable replacement is `strscpy` [2] due to
the fact that it guarantees NUL-termination on the destination buffer
without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html
Link: https://github.com/KSPP/linux/issues/90
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Thu, 21 Sep 2023 08:57:51 +0000 (10:57 +0200)]
i2c: mux: gpio: adhere to coding style
Advertise our coding style by following it :)
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Thu, 21 Sep 2023 08:40:15 +0000 (10:40 +0200)]
i2c: gpio: remove error checks with debugfs
debugfs can handle error pointers in subsequent calls. So, remove the
error checks as suggested by kerneldoc of this function.
Reported-by: Minjie Du <duminjie@vivo.com>
Closes: http://patchwork.ozlabs.org/project/linux-i2c/patch/20230713101829.15548-1-duminjie@vivo.com/
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Thu, 21 Sep 2023 12:53:50 +0000 (14:53 +0200)]
i2c: rcar: improve accuracy for R-Car Gen3+
With some new registers, SCL can be calculated to be closer to the
desired rate. Apply the new formula for R-Car Gen3 device types.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Thu, 21 Sep 2023 12:53:49 +0000 (14:53 +0200)]
i2c: rcar: reset controller is mandatory for Gen3+
Initially, we only needed a reset controller to make sure RXDMA works at
least once per transfer. Meanwhile, documentation has been updated. It
now says that a reset has to be performed prior every transaction, even
if it is non-DMA. So, make the reset controller a requirement instead of
being optional. And bail out if resetting fails.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Wed, 20 Sep 2023 07:33:01 +0000 (09:33 +0200)]
i2c: i801: replace acpi_lock with I2C bus lock
I2C core ensures in i2c_smbus_xfer() that the I2C bus lock is held when
calling the smbus_xfer callback. That's i801_access() in our case.
I think it's safe in general to assume that the I2C bus lock is held
when the smbus_xfer callback is called.
Therefore I see no need to define an own mutex.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Wed, 20 Sep 2023 07:29:28 +0000 (09:29 +0200)]
i2c: i801: use i2c_mark_adapter_suspended/resumed
When entering the suspend callback, at first we should ensure that
transfers are finished and I2C core can't start further transfers.
Use i2c_mark_adapter_suspended() for this purpose, and complement it
with a call to i2c_mark_adapter_resumed() in the resume path.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Ivan Orlov [Thu, 10 Aug 2023 17:46:18 +0000 (21:46 +0400)]
i2c: dev: make i2c_dev_class a static const structure
Now that the driver core allows for struct class to be in read-only
memory, move the i2c_dev_class structure to be declared at build time
placing it into read-only memory, instead of having to be dynamically
allocated at boot time.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Daniel Golle [Sun, 27 Aug 2023 02:13:30 +0000 (03:13 +0100)]
i2c: mt65xx: allow optional pmic clock
Using the I2C host controller on the MT7981 SoC requires 4 clocks to
be enabled. One of them, the pmic clk, is only enabled in case
'mediatek,have-pmic' is also set which has other consequences which
are not desired in this case.
Allow defining a pmic clk even in case the 'mediatek,have-pmic' propterty
is not present and the bus is not used to connect to a pmic, but may
still require to enable the pmic clock.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Mon, 18 Sep 2023 12:16:58 +0000 (14:16 +0200)]
i2c: i801: simplify module boilerplate code
Simplify the module boilerplate code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Mon, 18 Sep 2023 11:57:01 +0000 (13:57 +0200)]
i2c: i801: add helper i801_restore_regs
In few places relevant registers are reset to their initial value on
driver load. Factor this out to new helper i801_restore_regs to avoid
code duplication.
Even though no actual problems are known, this patch may contribute
to avoiding potential issues by:
- restoring register values also in the error path of i2c_add_adapter
- making restoring registers the last step (especially in i801_remove)
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Tue, 19 Sep 2023 19:57:45 +0000 (21:57 +0200)]
Merge branch 'i2c/for-current' into i2c/for-mergewindow
Yann Sionneau [Mon, 11 Sep 2023 14:07:49 +0000 (16:07 +0200)]
i2c: designware: fix __i2c_dw_disable() in case master is holding SCL low
The DesignWare IP can be synthesized with the IC_EMPTYFIFO_HOLD_MASTER_EN
parameter.
In this case, when the TX FIFO gets empty and the last command didn't have
the STOP bit (IC_DATA_CMD[9]), the controller will hold SCL low until
a new command is pushed into the TX FIFO or the transfer is aborted.
When the controller is holding SCL low, it cannot be disabled.
The transfer must first be aborted.
Also, the bus recovery won't work because SCL is held low by the master.
Check if the master is holding SCL low in __i2c_dw_disable() before trying
to disable the controller. If SCL is held low, an abort is initiated.
When the abort is done, then proceed with disabling the controller.
This whole situation can happen for instance during SMBus read data block
if the slave just responds with "byte count == 0".
This puts the driver in an unrecoverable state, because the controller is
holding SCL low and the current __i2c_dw_disable() procedure is not
working. In this situation only a SoC reset can fix the i2c bus.
Co-developed-by: Jonathan Borne <jborne@kalray.eu>
Signed-off-by: Jonathan Borne <jborne@kalray.eu>
Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Tue, 19 Sep 2023 14:56:46 +0000 (16:56 +0200)]
Merge tag 'ib-mfd-i2c-reboot-v6.7' of git://git./linux/kernel/git/lee/mfd into i2c/for-mergewindow
Immutable branch between MFD, I2C and Reboot due for the v6.7 merge window
Wolfram Sang [Wed, 6 Sep 2023 20:00:23 +0000 (22:00 +0200)]
i2c: riic: avoid potential division by zero
Value comes from DT, so it could be 0. Unlikely, but could be.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Wed, 6 Sep 2023 20:00:22 +0000 (22:00 +0200)]
i2c: rcar: remove open coded DIV_ROUND_CLOSEST
It improves readability if we use the available helper.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Wed, 6 Sep 2023 20:00:21 +0000 (22:00 +0200)]
i2c: rcar: calculate divider instead of brute-forcing it
Instead of trying all values, we can actually compute it as the comment
suggests. It is unclear what the comment means with "involved", it works
nicely.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Wed, 6 Sep 2023 20:00:20 +0000 (22:00 +0200)]
i2c: rcar: properly format a debug output
Use proper types and spacing.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Wolfram Sang [Wed, 6 Sep 2023 20:00:19 +0000 (22:00 +0200)]
i2c: rcar: avoid non-standard use of goto
Kernel functions goto somewhere on error conditions. Using goto for the
default path is irritating. Let's bail out on error instead and use a
proper retval.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Thu, 14 Sep 2023 21:08:44 +0000 (23:08 +0200)]
i2c: i801: unregister tco_pdev in i801_probe() error path
We have to unregister tco_pdev also if i2c_add_adapter() fails.
Fixes: 9424693035a5 ("i2c: i801: Create iTCO device on newer Intel PCHs")
Cc: stable@vger.kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Heiner Kallweit [Sat, 9 Sep 2023 20:25:06 +0000 (22:25 +0200)]
i2c: i801: fix potential race in i801_block_transaction_byte_by_byte
Currently we set SMBHSTCNT_LAST_BYTE only after the host has started
receiving the last byte. If we get e.g. preempted before setting
SMBHSTCNT_LAST_BYTE, the host may be finished with receiving the byte
before SMBHSTCNT_LAST_BYTE is set.
Therefore change the code to set SMBHSTCNT_LAST_BYTE before writing
SMBHSTSTS_BYTE_DONE for the byte before the last byte. Now the code
is also consistent with what we do in i801_isr_byte_done().
Reported-by: Jean Delvare <jdelvare@suse.com>
Closes: https://lore.kernel.org/linux-i2c/20230828152747.09444625@endymion.delvare/
Cc: stable@vger.kernel.org
Acked-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Linus Torvalds [Sun, 17 Sep 2023 21:40:24 +0000 (14:40 -0700)]
Linux 6.6-rc2
Linus Torvalds [Sun, 17 Sep 2023 18:13:37 +0000 (11:13 -0700)]
Merge tag 'x86-urgent-2023-09-17' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- Fix an UV boot crash
- Skip spurious ENDBR generation on _THIS_IP_
- Fix ENDBR use in putuser() asm methods
- Fix corner case boot crashes on 5-level paging
- and fix a false positive WARNING on LTO kernels"
* tag 'x86-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/purgatory: Remove LTO flags
x86/boot/compressed: Reserve more memory for page tables
x86/ibt: Avoid duplicate ENDBR in __put_user_nocheck*()
x86/ibt: Suppress spurious ENDBR
x86/platform/uv: Use alternate source for socket to node data
Linus Torvalds [Sun, 17 Sep 2023 18:10:23 +0000 (11:10 -0700)]
Merge tag 'sched-urgent-2023-09-17' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Fix a performance regression on large SMT systems, an Intel SMT4
balancing bug, and a topology setup bug on (Intel) hybrid processors"
* tag 'sched-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sched: Restore the SD_ASYM_PACKING flag in the DIE domain
sched/fair: Fix SMT4 group_smt_balance handling
sched/fair: Optimize should_we_balance() for large SMT systems
Linus Torvalds [Sun, 17 Sep 2023 17:59:37 +0000 (10:59 -0700)]
Merge tag 'objtool-urgent-2023-09-17' of git://git./linux/kernel/git/tip/tip
Pull objtool fix from Ingo Molnar:
"Fix a cold functions related false-positive objtool warning that
triggers on Clang"
* tag 'objtool-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix _THIS_IP_ detection for cold functions
Linus Torvalds [Sun, 17 Sep 2023 17:55:35 +0000 (10:55 -0700)]
Merge tag 'core-urgent-2023-09-17' of git://git./linux/kernel/git/tip/tip
Pull WARN fix from Ingo Molnar:
"Fix a missing preempt-enable in the WARN() slowpath"
* tag 'core-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
panic: Reenable preemption in WARN slowpath
Linus Torvalds [Sun, 3 Sep 2023 18:09:56 +0000 (11:09 -0700)]
stat: remove no-longer-used helper macros
The choose_32_64() macros were added to deal with an odd inconsistency
between the 32-bit and 64-bit layout of 'struct stat' way back when in
commit
a52dd971f947 ("vfs: de-crapify "cp_new_stat()" function").
Then a decade later Mikulas noticed that said inconsistency had been a
mistake in the early x86-64 port, and shouldn't have existed in the
first place. So commit
932aba1e1690 ("stat: fix inconsistency between
struct stat and struct compat_stat") removed the uses of the helpers.
But the helpers remained around, unused.
Get rid of them.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 17 Sep 2023 17:41:42 +0000 (10:41 -0700)]
Merge tag '6.6-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Three small SMB3 client fixes, one to improve a null check and two
minor cleanups"
* tag '6.6-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb3: fix some minor typos and repeated words
smb3: correct places where ENOTSUPP is used instead of preferred EOPNOTSUPP
smb3: move server check earlier when setting channel sequence number
Linus Torvalds [Sun, 17 Sep 2023 17:38:01 +0000 (10:38 -0700)]
Merge tag '6.6-rc1-ksmbd' of git://git.samba.org/ksmbd
Pull smb server fixes from Steve French:
"Two ksmbd server fixes"
* tag '6.6-rc1-ksmbd' of git://git.samba.org/ksmbd:
ksmbd: fix passing freed memory 'aux_payload_buf'
ksmbd: remove unneeded mark_inode_dirty in set_info_sec()
Linus Torvalds [Sun, 17 Sep 2023 17:33:53 +0000 (10:33 -0700)]
Merge tag 'ext4_for_linus-6.6-rc2' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Regression and bug fixes for ext4"
* tag 'ext4_for_linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: fix rec_len verify error
ext4: do not let fstrim block system suspend
ext4: move setting of trimmed bit into ext4_try_to_trim_range()
jbd2: Fix memory leak in journal_init_common()
jbd2: Remove page size assumptions
buffer: Make bh_offset() work for compound pages
Song Liu [Thu, 14 Sep 2023 17:01:38 +0000 (10:01 -0700)]
x86/purgatory: Remove LTO flags
-flto* implies -ffunction-sections. With LTO enabled, ld.lld generates
multiple .text sections for purgatory.ro:
$ readelf -S purgatory.ro | grep " .text"
[ 1] .text PROGBITS
0000000000000000 00000040
[ 7] .text.purgatory PROGBITS
0000000000000000 000020e0
[ 9] .text.warn PROGBITS
0000000000000000 000021c0
[13] .text.sha256_upda PROGBITS
0000000000000000 000022f0
[15] .text.sha224_upda PROGBITS
0000000000000000 00002be0
[17] .text.sha256_fina PROGBITS
0000000000000000 00002bf0
[19] .text.sha224_fina PROGBITS
0000000000000000 00002cc0
This causes WARNING from kexec_purgatory_setup_sechdrs():
WARNING: CPU: 26 PID: 110894 at kernel/kexec_file.c:919
kexec_load_purgatory+0x37f/0x390
Fix this by disabling LTO for purgatory.
[ AFAICT, x86 is the only arch that supports LTO and purgatory. ]
We could also fix this with an explicit linker script to rejoin .text.*
sections back into .text. However, given the benefit of LTOing purgatory
is small, simply disable the production of more .text.* sections for now.
Fixes: b33fff07e3e3 ("x86, build: allow LTO to be selected")
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20230914170138.995606-1-song@kernel.org
Kirill A. Shutemov [Fri, 15 Sep 2023 07:02:21 +0000 (10:02 +0300)]
x86/boot/compressed: Reserve more memory for page tables
The decompressor has a hard limit on the number of page tables it can
allocate. This limit is defined at compile-time and will cause boot
failure if it is reached.
The kernel is very strict and calculates the limit precisely for the
worst-case scenario based on the current configuration. However, it is
easy to forget to adjust the limit when a new use-case arises. The
worst-case scenario is rarely encountered during sanity checks.
In the case of enabling 5-level paging, a use-case was overlooked. The
limit needs to be increased by one to accommodate the additional level.
This oversight went unnoticed until Aaron attempted to run the kernel
via kexec with 5-level paging and unaccepted memory enabled.
Update wost-case calculations to include 5-level paging.
To address this issue, let's allocate some extra space for page tables.
128K should be sufficient for any use-case. The logic can be simplified
by using a single value for all kernel configurations.
[ Also add a warning, should this memory run low - by Dave Hansen. ]
Fixes: 34bbb0009f3b ("x86/boot/compressed: Enable 5-level paging during decompression stage")
Reported-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230915070221.10266-1-kirill.shutemov@linux.intel.com
Linus Torvalds [Sat, 16 Sep 2023 22:27:00 +0000 (15:27 -0700)]
Merge tag 'kbuild-fixes-v6.6' of git://git./linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix kernel-devel RPM and linux-headers Deb package
- Fix too long argument list error in 'make modules_install'
* tag 'kbuild-fixes-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: avoid long argument lists in make modules_install
kbuild: fix kernel-devel RPM package and linux-headers Deb package
Linus Torvalds [Sat, 16 Sep 2023 19:31:42 +0000 (12:31 -0700)]
vm: fix move_vma() memory accounting being off
Commit
408579cd627a ("mm: Update do_vmi_align_munmap() return
semantics") seems to have updated one of the callers of do_vmi_munmap()
incorrectly: it used to check for the error case (which didn't
change: negative means error).
That commit changed the check to the success case (which did change:
before that commit, 0 was success, and 1 was "success and lock
downgraded". After the change, it's always 0 for success, and the lock
will have been released if requested).
This didn't change any actual VM behavior _except_ for memory accounting
when 'VM_ACCOUNT' was set on the vma. Which made the wrong return value
test fairly subtle, since everything continues to work.
Or rather - it continues to work but the "Committed memory" accounting
goes all wonky (Committed_AS value in /proc/meminfo), and depending on
settings that then causes problems much much later as the VM relies on
bogus statistics for its heuristics.
Revert that one line of the change back to the original logic.
Fixes: 408579cd627a ("mm: Update do_vmi_align_munmap() return semantics")
Reported-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Reported-bisected-and-tested-by: Michael Labiuk <michael.labiuk@virtuozzo.com>
Cc: Bagas Sanjaya <bagasdotme@gmail.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Link: https://lore.kernel.org/all/1694366957@msgid.manchmal.in-ulm.de/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 16 Sep 2023 18:54:48 +0000 (11:54 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"16 small(ish) fixes all in drivers.
The major fixes are in pm8001 (fixes MSI-X issue going back to its
origin), the qla2xxx endianness fix, which fixes a bug on big endian
and the lpfc ones which can cause an oops on module removal without
them"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Prevent use-after-free during rmmod with mapped NVMe rports
scsi: lpfc: Early return after marking final NLP_DROPPED flag in dev_loss_tmo
scsi: lpfc: Fix the NULL vs IS_ERR() bug for debugfs_create_file()
scsi: target: core: Fix target_cmd_counter leak
scsi: pm8001: Setup IRQs on resume
scsi: pm80xx: Avoid leaking tags when processing OPC_INB_SET_CONTROLLER_CONFIG command
scsi: pm80xx: Use phy-specific SAS address when sending PHY_START command
scsi: ufs: core: Poll HCS.UCRDY before issuing a UIC command
scsi: ufs: core: Move __ufshcd_send_uic_cmd() outside host_lock
scsi: qedf: Add synchronization between I/O completions and abort
scsi: target: Replace strlcpy() with strscpy()
scsi: qla2xxx: Fix NULL vs IS_ERR() bug for debugfs_create_dir()
scsi: qla2xxx: Use raw_smp_processor_id() instead of smp_processor_id()
scsi: qla2xxx: Correct endianness for rqstlen and rsplen
scsi: ppa: Fix accidentally reversed conditions for 16-bit and 32-bit EPP
scsi: megaraid_sas: Fix deadlock on firmware crashdump
Linus Torvalds [Sat, 16 Sep 2023 18:49:57 +0000 (11:49 -0700)]
Merge tag 'ata-6.6-rc2' of git://git./linux/kernel/git/dlemoal/libata
Pull ata fixes from Damien Le Moal:
- Fix link power management transitions to disallow unsupported states
(Niklas)
- A small string handling fix for the sata_mv driver (Christophe)
- Clear port pending interrupts before reset, as per AHCI
specifications (Szuying).
Followup fixes for this one are to not clear ATA_PFLAG_EH_PENDING in
ata_eh_reset() to allow EH to continue on with other actions recorded
with error interrupts triggered before EH completes. And an
additional fix to avoid thawing a port twice in EH (Niklas)
- Small code style fixes in the pata_parport driver to silence the
build bot as it keeps complaining about bad indentation (me)
- A fix for the recent CDL code to avoid fetching sense data for
successful commands when not necessary for correct operation (Niklas)
* tag 'ata-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: libata-core: fetch sense data for successful commands iff CDL enabled
ata: libata-eh: do not thaw the port twice in ata_eh_reset()
ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset()
ata: pata_parport: Fix code style issues
ata: libahci: clear pending interrupt status
ata: sata_mv: Fix incorrect string length computation in mv_dump_mem()
ata: libata: disallow dev-initiated LPM transitions to unsupported states
Linus Torvalds [Sat, 16 Sep 2023 18:37:11 +0000 (11:37 -0700)]
Merge tag 'usb-6.6-rc2' of git://git./linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB fix for a much-reported regression for 6.6-rc1.
It resolves a crash in the typec debugfs code for many systems. It's
been in linux-next with no reported issues, and many people have
reported it resolving their problem with 6.6-rc1"
* tag 'usb-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: Fix NULL pointer dereference
Linus Torvalds [Sat, 16 Sep 2023 18:26:52 +0000 (11:26 -0700)]
Merge tag 'driver-core-6.6-rc2' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here is a single driver core fix for a much-reported-by-sysbot issue
that showed up in 6.6-rc1. It's been submitted by many people, all in
the same way, so it obviously fixes things for them all.
Also in here is a single documentation update adding riscv to the
embargoed hardware document in case there are any future issues with
that processor family.
Both of these have been in linux-next with no reported problems"
* tag 'driver-core-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: embargoed-hardware-issues.rst: Add myself for RISC-V
driver core: return an error when dev_set_name() hasn't happened
Linus Torvalds [Sat, 16 Sep 2023 18:17:19 +0000 (11:17 -0700)]
Merge tag 'char-misc-6.6-rc2' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc fix from Greg KH:
"Here is a single patch for 6.6-rc2 that reverts a 6.5 change for the
comedi subsystem that has ended up being incorrect and caused drivers
that were working for people to be unable to be able to be selected to
build at all.
To fix this, the Kconfig change needs to be reverted and a future set
of fixes for the ioport dependancies will show up in 6.7-rc1 (there's
no rush for them.)
This has been in linux-next with no reported issues"
* tag 'char-misc-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Revert "comedi: add HAS_IOPORT dependencies"
Linus Torvalds [Sat, 16 Sep 2023 18:09:18 +0000 (11:09 -0700)]
Merge tag 'i2c-for-6.6-rc2' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"The main thing is the removal of 'probe_new' because all i2c client
drivers are converted now. Thanks Uwe, this marks the end of a long
conversion process.
Other than that, we have a few Kconfig updates and driver bugfixes"
* tag 'i2c-for-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: cadence: Fix the kernel-doc warnings
i2c: aspeed: Reset the i2c controller when timeout occurs
i2c: I2C_MLXCPLD on ARM64 should depend on ACPI
i2c: Make I2C_ATR invisible
i2c: Drop legacy callback .probe_new()
w1: ds2482: Switch back to use struct i2c_driver's .probe()
Niklas Cassel [Wed, 13 Sep 2023 15:04:43 +0000 (17:04 +0200)]
ata: libata-core: fetch sense data for successful commands iff CDL enabled
Currently, we fetch sense data for a _successful_ command if either:
1) Command was NCQ and ATA_DFLAG_CDL_ENABLED flag set (flag
ATA_DFLAG_CDL_ENABLED will only be set if the Successful NCQ command
sense data supported bit is set); or
2) Command was non-NCQ and regular sense data reporting is enabled.
This means that case 2) will trigger for a non-NCQ command which has
ATA_SENSE bit set, regardless if CDL is enabled or not.
This decision was by design. If the device reports that it has sense data
available, it makes sense to fetch that sense data, since the sk/asc/ascq
could be important information regardless if CDL is enabled or not.
However, the fetching of sense data for a successful command is done via
ATA EH. Considering how intricate the ATA EH is, we really do not want to
invoke ATA EH unless absolutely needed.
Before commit
18bd7718b5c4 ("scsi: ata: libata: Handle completion of CDL
commands using policy 0xD") we never fetched sense data for successful
commands.
In order to not invoke the ATA EH unless absolutely necessary, even if the
device claims support for sense data reporting, only fetch sense data for
successful (NCQ and non-NCQ commands) commands that are using CDL.
[Damien] Modified the check to test the qc flag ATA_QCFLAG_HAS_CDL
instead of the device support for CDL, which is implied for commands
using CDL.
Fixes: 3ac873c76d79 ("ata: libata-core: fix when to fetch sense data for successful commands")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Niklas Cassel [Wed, 13 Sep 2023 22:19:17 +0000 (00:19 +0200)]
ata: libata-eh: do not thaw the port twice in ata_eh_reset()
commit
1e641060c4b5 ("libata: clear eh_info on reset completion") added
a workaround that broke the retry mechanism in ATA EH.
Tejun himself suggested to remove this workaround when it was identified
to cause additional problems:
https://lore.kernel.org/linux-ide/
20110426135027.GI878@htj.dyndns.org/
He even said:
"Hmm... it seems I wasn't thinking straight when I added that work around."
https://lore.kernel.org/linux-ide/
20110426155229.GM878@htj.dyndns.org/
While removing the workaround solved the issue, however, the workaround was
kept to avoid "spurious hotplug events during reset", and instead another
workaround was added on top of the existing workaround in commit
8c56cacc724c ("libata: fix unexpectedly frozen port after ata_eh_reset()").
Because these IRQs happened when the port was frozen, we know that they
were actually a side effect of PxIS and IS.IPS(x) not being cleared before
the COMRESET. This is now done in commit
94152042eaa9 ("ata: libahci: clear
pending interrupt status"), so these workarounds can now be removed.
Since commit
1e641060c4b5 ("libata: clear eh_info on reset completion") has
now been reverted, the ATA EH retry mechanism is functional again, so there
is once again no need to thaw the port more than once in ata_eh_reset().
This reverts "the workaround on top of the workaround" introduced in commit
8c56cacc724c ("libata: fix unexpectedly frozen port after ata_eh_reset()").
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Niklas Cassel [Wed, 13 Sep 2023 22:19:16 +0000 (00:19 +0200)]
ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset()
ata_scsi_port_error_handler() starts off by clearing ATA_PFLAG_EH_PENDING,
before calling ap->ops->error_handler() (without holding the ap->lock).
If an error IRQ is received while ap->ops->error_handler() is running,
the irq handler will set ATA_PFLAG_EH_PENDING.
Once ap->ops->error_handler() returns, ata_scsi_port_error_handler()
checks if ATA_PFLAG_EH_PENDING is set, and if it is, another iteration
of ATA EH is performed.
The problem is that ATA_PFLAG_EH_PENDING is not only cleared by
ata_scsi_port_error_handler(), it is also cleared by ata_eh_reset().
ata_eh_reset() is called by ap->ops->error_handler(). This additional
clearing done by ata_eh_reset() breaks the whole retry logic in
ata_scsi_port_error_handler(). Thus, if an error IRQ is received while
ap->ops->error_handler() is running, the port will currently remain
frozen and will never get re-enabled.
The additional clearing in ata_eh_reset() was introduced in commit
1e641060c4b5 ("libata: clear eh_info on reset completion").
Looking at the original error report:
https://marc.info/?l=linux-ide&m=
124765325828495&w=2
We can see the following happening:
[ 1.074659] ata3: XXX port freeze
[ 1.074700] ata3: XXX hardresetting link, stopping engine
[ 1.074746] ata3: XXX flipping SControl
[ 1.411471] ata3: XXX irq_stat=400040 CONN|PHY
[ 1.411475] ata3: XXX port freeze
[ 1.420049] ata3: XXX starting engine
[ 1.420096] ata3: XXX rc=0, class=1
[ 1.420142] ata3: XXX clearing IRQs for thawing
[ 1.420188] ata3: XXX port thawed
[ 1.420234] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
We are not supposed to be able to receive an error IRQ while the port is
frozen (PxIE is set to 0, i.e. all IRQs for the port are disabled).
AHCI 1.3.1 section 10.7.1.1 First Tier (IS Register) states:
"Each bit location can be thought of as reporting a '1' if the virtual
"interrupt line" for that port is indicating it wishes to generate an
interrupt. That is, if a port has one or more interrupt status bit set,
and the enables for those status bits are set, then this bit shall be set."
Additionally, AHCI state P:ComInit clearly shows that the state machine
will only jump to P:ComInitSetIS (which sets IS.IPS(x) to '1'), if PxIE.PCE
is set to '1'. In our case, PxIE is set to 0, so IS.IPS(x) won't get set.
So IS.IPS(x) only gets set if PxIS and PxIE is set.
AHCI 1.3.1 section 10.7.1.1 First Tier (IS Register) also states:
"The bits in this register are read/write clear. It is set by the level of
the virtual interrupt line being a set, and cleared by a write of '1' from
the software."
So if IS.IPS(x) is set, you need to explicitly clear it by writing a 1 to
IS.IPS(x) for that port.
Since PxIE is cleared, the only way to get an interrupt while the port is
frozen, is if IS.IPS(x) is set, and the only way IS.IPS(x) can be set when
the port is frozen, is if it was set before the port was frozen.
However, since commit
737dd811a3db ("ata: libahci: clear pending interrupt
status"), we clear both PxIS and IS.IPS(x) after freezing the port, but
before the COMRESET, so the problem that commit
1e641060c4b5 ("libata:
clear eh_info on reset completion") fixed can no longer happen.
Thus, revert commit
1e641060c4b5 ("libata: clear eh_info on reset
completion"), so that the retry logic in ata_scsi_port_error_handler()
works once again. (The retry logic is still needed, since we can still
get an error IRQ _after_ the port has been thawed, but before
ata_scsi_port_error_handler() takes the ap->lock in order to check
if ATA_PFLAG_EH_PENDING is set.)
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Linus Torvalds [Sat, 16 Sep 2023 02:22:20 +0000 (19:22 -0700)]
Merge tag 'linux-kselftest-fixes-6.6-rc2' of git://git./linux/kernel/git/shuah/linux-kselftest
Pull more kselftest fixes from Shuah Khan
"Fixes to user_events test and ftrace test.
The user_events test was enabled by default in Linux 6.6-rc1. The
following fixes are for bugs found since then:
- add checks for dependencies and skip the test if they aren't met.
The user_events test requires root access, and tracefs and
user_events enabled. It leaves tracefs mounted and a fix is in
progress for that missing piece.
- create user_events test-specific Kconfig fragments
ftrace test fixes:
- unmount tracefs for recovering environment. Fix identified during
the above mentioned user_events dependencies fix.
- adds softlink to latest log directory improving usage"
* tag 'linux-kselftest-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: tracing: Fix to unmount tracefs for recovering environment
selftests: user_events: create test-specific Kconfig fragments
ftrace/selftests: Add softlink to latest log directory
selftests/user_events: Fix failures when user_events is not installed
Linus Torvalds [Fri, 15 Sep 2023 23:48:44 +0000 (16:48 -0700)]
Merge tag 'nfsd-6.6-1' of git://git./linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
- Use correct order when encoding NFSv4 RENAME change_info
- Fix a potential oops during NFSD shutdown
* tag 'nfsd-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
NFSD: fix possible oops when nfsd/pool_stats is closed.
nfsd: fix change_info in NFSv4 RENAME replies
Linus Torvalds [Fri, 15 Sep 2023 22:11:53 +0000 (15:11 -0700)]
Merge tag 'pm-6.6-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fix the handling of block devices in the test_resume mode of
hibernation (Chen Yu)"
* tag 'pm-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Fix the exclusive get block device in test_resume mode
PM: hibernate: Rename function parameter from snapshot_test to exclusive
Linus Torvalds [Fri, 15 Sep 2023 21:52:59 +0000 (14:52 -0700)]
Merge tag 'thermal-6.6-rc2' of git://git./linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix a thermal core breakage introduced by one of the recent
changes, amend those changes by adding 'const' to a new callback
argument and fix two memory leaks.
Specifics:
- Unbreak disabled trip point check in handle_thermal_trip() that may
cause it to skip enabled trip points (Rafael Wysocki)
- Add missing of_node_put() to of_find_trip_id() and
thermal_of_for_each_cooling_maps() that each break out of a
for_each_child_of_node() loop without dropping the reference to the
child object (Julia Lawall)
- Constify the recently added trip argument of the .get_trend()
thermal zone callback (Rafael Wysocki)"
* tag 'thermal-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: core: Fix disabled trip point check in handle_thermal_trip()
thermal: Constify the trip argument of the .get_trend() zone callback
thermal/of: add missing of_node_put()
Linus Torvalds [Fri, 15 Sep 2023 21:30:54 +0000 (14:30 -0700)]
Merge tag 'for-6.6/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix DM core retrieve_deps() UAF race due to missing locking of a DM
table's list of devices that is managed using dm_{get,put}_device.
- Revert DM core's half-baked RCU optimization if IO submitter has set
REQ_NOWAIT. Can be revisited, and properly justified, after
comprehensively auditing all of DM to also pass GFP_NOWAIT for any
allocations if REQ_NOWAIT used.
* tag 'for-6.6/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: don't attempt to queue IO under RCU protection
dm: fix a race condition in retrieve_deps
Linus Torvalds [Fri, 15 Sep 2023 21:05:58 +0000 (14:05 -0700)]
Merge tag 'block-6.6-2023-09-15' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull via Keith:
- nvme-tcp iov len fix (Varun)
- nvme-hwmon const qualifier for safety (Krzysztof)
- nvme-fc null pointer checks (Nigel)
- nvme-pci no numa node fix (Pratyush)
- nvme timeout fix for non-compliant controllers (Keith)
- MD pull via Song fixing regressions with both 6.5 and 6.6
- Fix a use-after-free regression in resizing blk-mq tags (Chengming)
* tag 'block-6.6-2023-09-15' of git://git.kernel.dk/linux:
nvme: avoid bogus CRTO values
md: Put the right device in md_seq_next
nvme-pci: do not set the NUMA node of device if it has none
blk-mq: fix tags UAF when shrinking q->nr_hw_queues
md/raid1: fix error: ISO C90 forbids mixed declarations
md: fix warning for holder mismatch from export_rdev()
md: don't dereference mddev after export_rdev()
nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid()
nvme: host: hwmon: constify pointers to hwmon_channel_info
nvmet-tcp: pass iov_len instead of sg->length to bvec_set_page()
Linus Torvalds [Fri, 15 Sep 2023 20:55:29 +0000 (13:55 -0700)]
Merge tag 'io_uring-6.6-2023-09-15' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a single fix, fixing a regression with poll first, recvmsg, and
using a provided buffer"
* tag 'io_uring-6.6-2023-09-15' of git://git.kernel.dk/linux:
io_uring/net: fix iter retargeting for selected buf
Linus Torvalds [Fri, 15 Sep 2023 20:51:01 +0000 (13:51 -0700)]
Merge tag 'firewire-fixes-6.6-rc2' of git://git./linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"A change applied to v6.5 kernel brings an issue that usual GFP
allocation is done in atomic context under acquired spin-lock. Let us
revert it"
* tag 'firewire-fixes-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
Revert "firewire: core: obsolete usage of GFP_ATOMIC at building node tree"
Linus Torvalds [Fri, 15 Sep 2023 20:25:52 +0000 (13:25 -0700)]
Merge tag 'drm-fixes-2023-09-15' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular rc2 fixes pull, mostly made up of amdgpu stuff, one i915, and
a bunch of others, one vkms locking violation is reverted.
connector:
- doc fix
exec:
- workaround lockdep issue
tests:
- fix a UAF
vkms:
- revert hrtimer fix
fbdev:
- g364fb: fix build failure with mips
i915:
- Only check eDP HPD when AUX CH is shared.
amdgpu:
- GC 9.4.3 fixes
- Fix white screen issues with S/G display on system with >= 64G of ram
- Replay fixes
- SMU 13.0.6 fixes
- AUX backlight fix
- NBIO 4.3 SR-IOV fixes for HDP
- RAS fixes
- DP MST resume fix
- Fix segfault on systems with no vbios
- DPIA fixes
amdkfd:
- CWSR grace period fix
- Unaligned doorbell fix
- CRIU fix for GFX11
- Add missing TLB flush on gfx10 and newer
radeon:
- make fence wait in suballocator uninterrruptable
gm12u320:
- Fix the timeout usage for usb_bulk_msg()"
* tag 'drm-fixes-2023-09-15' of git://anongit.freedesktop.org/drm/drm: (29 commits)
drm/tests: helpers: Avoid a driver uaf
Revert "drm/vkms: Fix race-condition between the hrtimer and the atomic commit"
drm/amdkfd: Insert missing TLB flush on GFX10 and later
drm/i915: Only check eDP HPD when AUX CH is shared
drm/amd/display: Fix 2nd DPIA encoder Assignment
drm/amd/display: Add DPIA Link Encoder Assignment Fix
drm/amd/display: fix replay_mode kernel-doc warning
drm/amdgpu: Handle null atom context in VBIOS info ioctl
drm/amdkfd: Checkpoint and restore queues on GFX11
drm/amd/display: Adjust the MST resume flow
drm/amdgpu: fallback to old RAS error message for aqua_vanjaram
drm/amdgpu/nbio4.3: set proper rmmio_remap.reg_offset for SR-IOV
drm/amdgpu/soc21: don't remap HDP registers for SR-IOV
drm/amd/display: Don't check registers, if using AUX BL control
drm/amdgpu: fix retry loop test
drm/amd/display: Add dirty rect support for Replay
Revert "drm/amd: Disable S/G for APUs when 64GB or more host memory"
drm/amd/display: fix the white screen issue when >= 64GB DRAM
drm/amdkfd: Update CU masking for GFX 9.4.3
drm/amdkfd: Update cache info reporting for GFX v9.4.3
...
Linus Torvalds [Fri, 15 Sep 2023 19:42:48 +0000 (12:42 -0700)]
Merge tag 'efi-fixes-for-v6.6-1' of git://git./linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- Missing x86 patch for the runtime cleanup that was merged in -rc1
- Kconfig tweak for kexec on x86 so EFI support does not get disabled
inadvertently
- Use the right EFI memory type for the unaccepted memory table so
kexec/kdump exposes it to the crash kernel as well
- Work around EFI implementations which do not implement
QueryVariableInfo, which is now called by statfs() on efivarfs
* tag 'efi-fixes-for-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivarfs: fix statfs() on efivarfs
efi/unaccepted: Use ACPI reclaim memory for unaccepted memory table
efi/x86: Ensure that EFI_RUNTIME_MAP is enabled for kexec
efi/x86: Move EFI runtime call setup/teardown helpers out of line
Jens Axboe [Fri, 15 Sep 2023 19:14:23 +0000 (13:14 -0600)]
dm: don't attempt to queue IO under RCU protection
dm looks up the table for IO based on the request type, with an
assumption that if the request is marked REQ_NOWAIT, it's fine to
attempt to submit that IO while under RCU read lock protection. This
is not OK, as REQ_NOWAIT just means that we should not be sleeping
waiting on other IO, it does not mean that we can't potentially
schedule.
A simple test case demonstrates this quite nicely:
int main(int argc, char *argv[])
{
struct iovec iov;
int fd;
fd = open("/dev/dm-0", O_RDONLY | O_DIRECT);
posix_memalign(&iov.iov_base, 4096, 4096);
iov.iov_len = 4096;
preadv2(fd, &iov, 1, 0, RWF_NOWAIT);
return 0;
}
which will instantly spew:
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 5580, name: dm-nowait
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 7 PID: 5580 Comm: dm-nowait Not tainted
6.6.0-rc1-g39956d2dcd81 #132
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x11d/0x1b0
__might_resched+0x3c3/0x5e0
? preempt_count_sub+0x150/0x150
mempool_alloc+0x1e2/0x390
? mempool_resize+0x7d0/0x7d0
? lock_sync+0x190/0x190
? lock_release+0x4b7/0x670
? internal_get_user_pages_fast+0x868/0x2d40
bio_alloc_bioset+0x417/0x8c0
? bvec_alloc+0x200/0x200
? internal_get_user_pages_fast+0xb8c/0x2d40
bio_alloc_clone+0x53/0x100
dm_submit_bio+0x27f/0x1a20
? lock_release+0x4b7/0x670
? blk_try_enter_queue+0x1a0/0x4d0
? dm_dax_direct_access+0x260/0x260
? rcu_is_watching+0x12/0xb0
? blk_try_enter_queue+0x1cc/0x4d0
__submit_bio+0x239/0x310
? __bio_queue_enter+0x700/0x700
? kvm_clock_get_cycles+0x40/0x60
? ktime_get+0x285/0x470
submit_bio_noacct_nocheck+0x4d9/0xb80
? should_fail_request+0x80/0x80
? preempt_count_sub+0x150/0x150
? lock_release+0x4b7/0x670
? __bio_add_page+0x143/0x2d0
? iov_iter_revert+0x27/0x360
submit_bio_noacct+0x53e/0x1b30
submit_bio_wait+0x10a/0x230
? submit_bio_wait_endio+0x40/0x40
__blkdev_direct_IO_simple+0x4f8/0x780
? blkdev_bio_end_io+0x4c0/0x4c0
? stack_trace_save+0x90/0xc0
? __bio_clone+0x3c0/0x3c0
? lock_release+0x4b7/0x670
? lock_sync+0x190/0x190
? atime_needs_update+0x3bf/0x7e0
? timestamp_truncate+0x21b/0x2d0
? inode_owner_or_capable+0x240/0x240
blkdev_direct_IO.part.0+0x84a/0x1810
? rcu_is_watching+0x12/0xb0
? lock_release+0x4b7/0x670
? blkdev_read_iter+0x40d/0x530
? reacquire_held_locks+0x4e0/0x4e0
? __blkdev_direct_IO_simple+0x780/0x780
? rcu_is_watching+0x12/0xb0
? __mark_inode_dirty+0x297/0xd50
? preempt_count_add+0x72/0x140
blkdev_read_iter+0x2a4/0x530
do_iter_readv_writev+0x2f2/0x3c0
? generic_copy_file_range+0x1d0/0x1d0
? fsnotify_perm.part.0+0x25d/0x630
? security_file_permission+0xd8/0x100
do_iter_read+0x31b/0x880
? import_iovec+0x10b/0x140
vfs_readv+0x12d/0x1a0
? vfs_iter_read+0xb0/0xb0
? rcu_is_watching+0x12/0xb0
? rcu_is_watching+0x12/0xb0
? lock_release+0x4b7/0x670
do_preadv+0x1b3/0x260
? do_readv+0x370/0x370
__x64_sys_preadv2+0xef/0x150
do_syscall_64+0x39/0xb0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5af41ad806
Code: 41 54 41 89 fc 55 44 89 c5 53 48 89 cb 48 83 ec 18 80 3d e4 dd 0d 00 00 74 7a 45 89 c1 49 89 ca 45 31 c0 b8 47 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 be 00 00 00 48 85 c0 79 4a 48 8b 0d da 55
RSP: 002b:
00007ffd3145c7f0 EFLAGS:
00000246 ORIG_RAX:
0000000000000147
RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f5af41ad806
RDX:
0000000000000001 RSI:
00007ffd3145c850 RDI:
0000000000000003
RBP:
0000000000000008 R08:
0000000000000000 R09:
0000000000000008
R10:
0000000000000000 R11:
0000000000000246 R12:
0000000000000003
R13:
00007ffd3145c850 R14:
000055f5f0431dd8 R15:
0000000000000001
</TASK>
where in fact it is dm itself that attempts to allocate a bio clone with
GFP_NOIO under the rcu read lock, regardless of the request type.
Fix this by getting rid of the special casing for REQ_NOWAIT, and just
use the normal SRCU protected table lookup. Get rid of the bio based
table locking helpers at the same time, as they are now unused.
Cc: stable@vger.kernel.org
Fixes: 563a225c9fd2 ("dm: introduce dm_{get,put}_live_table_bio called from dm_submit_bio")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Linus Torvalds [Fri, 15 Sep 2023 19:38:44 +0000 (12:38 -0700)]
Merge tag 'selinux-pr-
20230914' of git://git./linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"A relatively small SELinux patch to fix an issue with a
vfs/LSM/SELinux patch that went upstream during the recent merge
window.
The short version is that the original patch changed how we
initialized mount options to resolve a NFS issue and we inadvertently
broke a use case due to the changed behavior.
The fix restores this behavior for the cases that require it while
keeping the original NFS fix in place"
* tag 'selinux-pr-
20230914' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix handling of empty opts in selinux_fs_context_submount()
Linus Torvalds [Fri, 15 Sep 2023 19:33:01 +0000 (12:33 -0700)]
Merge tag 'riscv-for-linus-6.6-rc2' of git://git./linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix to align kexec'd kernels to PMD boundries
- The T-Head dcache.cva encoding was incorrect, it has been fixed to
invalidate all caches (as opposed to just the L1)
* tag 'riscv-for-linus-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: errata: fix T-Head dcache.cva encoding
riscv: kexec: Align the kexeced kernel entry
Takashi Sakamoto [Fri, 15 Sep 2023 09:33:59 +0000 (18:33 +0900)]
Revert "firewire: core: obsolete usage of GFP_ATOMIC at building node tree"
This reverts commit
06f45435d985d60d7d2fe2424fbb9909d177a63d.
John Ogness reports the case that the allocation is in atomic context under
acquired spin-lock.
[ 12.555784] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
[ 12.555808] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 70, name: kworker/1:2
[ 12.555814] preempt_count: 1, expected: 0
[ 12.555820] INFO: lockdep is turned off.
[ 12.555824] irq event stamp: 208
[ 12.555828] hardirqs last enabled at (207): [<
c00000000111e414>] ._raw_spin_unlock_irq+0x44/0x80
[ 12.555850] hardirqs last disabled at (208): [<
c00000000110ff94>] .__schedule+0x854/0xfe0
[ 12.555859] softirqs last enabled at (188): [<
c000000000f73504>] .addrconf_verify_rtnl+0x2c4/0xb70
[ 12.555872] softirqs last disabled at (182): [<
c000000000f732b0>] .addrconf_verify_rtnl+0x70/0xb70
[ 12.555884] CPU: 1 PID: 70 Comm: kworker/1:2 Tainted: G S 6.6.0-rc1 #1
[ 12.555893] Hardware name: PowerMac7,2 PPC970 0x390202 PowerMac
[ 12.555898] Workqueue: firewire_ohci .bus_reset_work [firewire_ohci]
[ 12.555939] Call Trace:
[ 12.555944] [
c000000009677830] [
c0000000010d83c0] .dump_stack_lvl+0x8c/0xd0 (unreliable)
[ 12.555963] [
c0000000096778b0] [
c000000000140270] .__might_resched+0x320/0x340
[ 12.555978] [
c000000009677940] [
c000000000497600] .__kmem_cache_alloc_node+0x390/0x460
[ 12.555993] [
c000000009677a10] [
c0000000003fe620] .__kmalloc+0x70/0x310
[ 12.556007] [
c000000009677ac0] [
c0003d00004e2268] .fw_core_handle_bus_reset+0x2c8/0xba0 [firewire_core]
[ 12.556060] [
c000000009677c20] [
c0003d0000491190] .bus_reset_work+0x330/0x9b0 [firewire_ohci]
[ 12.556079] [
c000000009677d10] [
c00000000011d0d0] .process_one_work+0x280/0x6f0
[ 12.556094] [
c000000009677e10] [
c00000000011d8a0] .worker_thread+0x360/0x500
[ 12.556107] [
c000000009677ef0] [
c00000000012e3b4] .kthread+0x154/0x160
[ 12.556120] [
c000000009677f90] [
c00000000000bfa8] .start_kernel_thread+0x10/0x14
Cc: stable@kernel.org
Reported-by: John Ogness <john.ogness@linutronix.de>
Link: https://lore.kernel.org/lkml/87jzsuv1xk.fsf@jogness.linutronix.de/raw
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Lukas Wunner [Fri, 15 Sep 2023 07:55:39 +0000 (09:55 +0200)]
panic: Reenable preemption in WARN slowpath
Commit:
5a5d7e9badd2 ("cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG")
amended warn_slowpath_fmt() to disable preemption until the WARN splat
has been emitted.
However the commit neglected to reenable preemption in the !fmt codepath,
i.e. when a WARN splat is emitted without additional format string.
One consequence is that users may see more splats than intended. E.g. a
WARN splat emitted in a work item results in at least two extra splats:
BUG: workqueue leaked lock or atomic
(emitted by process_one_work())
BUG: scheduling while atomic
(emitted by worker_thread() -> schedule())
Ironically the point of the commit was to *avoid* extra splats. ;)
Fix it.
Fixes: 5a5d7e9badd2 ("cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/3ec48fde01e4ee6505f77908ba351bad200ae3d1.1694763684.git.lukas@wunner.de
Steve French [Fri, 15 Sep 2023 06:37:33 +0000 (01:37 -0500)]
smb3: fix some minor typos and repeated words
Minor cleanup pointed out by checkpatch (repeated words, missing blank
lines) in smb2pdu.c and old header location referred to in transport.c
Signed-off-by: Steve French <stfrench@microsoft.com>
Steve French [Fri, 15 Sep 2023 06:10:40 +0000 (01:10 -0500)]
smb3: correct places where ENOTSUPP is used instead of preferred EOPNOTSUPP
checkpatch flagged a few places with:
WARNING: ENOTSUPP is not a SUSV4 error code, prefer EOPNOTSUPP
Also fixed minor typo
Signed-off-by: Steve French <stfrench@microsoft.com>
Damien Le Moal [Fri, 15 Sep 2023 02:33:12 +0000 (11:33 +0900)]
ata: pata_parport: Fix code style issues
Fix indentation and other code style issues in the comm.c file.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202309150646.n3iBvbPj-lkp@intel.com/
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Szuying Chen [Thu, 7 Sep 2023 08:17:10 +0000 (16:17 +0800)]
ata: libahci: clear pending interrupt status
When a CRC error occurs, the HBA asserts an interrupt to indicate an
interface fatal error (PxIS.IFS). The ISR clears PxIE and PxIS, then
does error recovery. If the adapter receives another SDB FIS
with an error (PxIS.TFES) from the device before the start of the EH
recovery process, the interrupt signaling the new SDB cannot be
serviced as PxIE was cleared already. This in turn results in the HBA
inability to issue any command during the error recovery process after
setting PxCMD.ST to 1 because PxIS.TFES is still set.
According to AHCI 1.3.1 specifications section 6.2.2, fatal errors
notified by setting PxIS.HBFS, PxIS.HBDS, PxIS.IFS or PxIS.TFES will
cause the HBA to enter the ERR:Fatal state. In this state, the HBA
shall not issue any new commands.
To avoid this situation, introduce the function
ahci_port_clear_pending_irq() to clear pending interrupts before
executing a COMRESET. This follows the AHCI 1.3.1 - section 6.2.2.2
specification.
Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Fixes: e0bfd149973d ("[PATCH] ahci: stop engine during hard reset")
Cc: stable@vger.kernel.org
Reviewed-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Dave Airlie [Fri, 15 Sep 2023 01:07:05 +0000 (11:07 +1000)]
Merge tag 'drm-misc-fixes-2023-09-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
* radeon: Uninterruptible fence waiting
* tests: Fix use-after-free bug
* vkms: Revert hrtimer fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230914122649.GA28252@linux-uq9g
Dave Airlie [Fri, 15 Sep 2023 00:12:21 +0000 (10:12 +1000)]
Merge tag 'drm-intel-fixes-2023-09-14' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Only check eDP HPD when AUX CH is shared.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZQL+NqtIZH5F/Nxr@intel.com
Dave Airlie [Thu, 14 Sep 2023 23:50:34 +0000 (09:50 +1000)]
Merge tag 'amd-drm-fixes-6.6-2023-09-13' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.6-2023-09-13:
amdgpu:
- GC 9.4.3 fixes
- Fix white screen issues with S/G display on system with >= 64G of ram
- Replay fixes
- SMU 13.0.6 fixes
- AUX backlight fix
- NBIO 4.3 SR-IOV fixes for HDP
- RAS fixes
- DP MST resume fix
- Fix segfault on systems with no vbios
- DPIA fixes
amdkfd:
- CWSR grace period fix
- Unaligned doorbell fix
- CRIU fix for GFX11
- Add missing TLB flush on gfx10 and newer
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230913195009.7714-1-alexander.deucher@amd.com