usb: chipidea: wait controller resume finished for wakeup irq
authorXu Yang <xu.yang_2@nxp.com>
Thu, 28 Dec 2023 11:07:52 +0000 (19:07 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 4 Jan 2024 15:01:56 +0000 (16:01 +0100)
commit128d849074d05545becf86e713715ce7676fc074
tree3b2e411f604b986768ced0a6fd2c3d665dd41cd9
parent5dbe9ac28355fd8f4a7c4732e1e2b7db4fb9f405
usb: chipidea: wait controller resume finished for wakeup irq

After the chipidea driver introduce extcon for id and vbus, it's able
to wakeup from another irq source, in case the system with extcon ID
cable, wakeup from usb ID cable and device removal, the usb device
disconnect irq may come firstly before the extcon notifier while system
resume, so we will get 2 "wakeup" irq, one for usb device disconnect;
and one for extcon ID cable change(real wakeup event), current driver
treat them as 2 successive wakeup irq so can't handle it correctly, then
finally the usb irq can't be enabled. This patch adds a check to bypass
further usb events before controller resume finished to fix it.

Fixes: 1f874edcb731 ("usb: chipidea: add runtime power management support")
cc:  <stable@vger.kernel.org>
Acked-by: Peter Chen <peter.chen@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Signed-off-by: Li Jun <jun.li@nxp.com>
Link: https://lore.kernel.org/r/20231228110753.1755756-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/chipidea/core.c