]> git.baikalelectronics.ru Git - kernel.git/commit
Bluetooth: btusb: request wake pin with NOAUTOEN
authorBrian Norris <briannorris@chromium.org>
Tue, 9 Apr 2019 18:49:17 +0000 (11:49 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 10 Apr 2019 03:38:24 +0000 (17:38 -1000)
commite9e6fe30c590857413fa091f877fd5252ffab59a
treea0574841f90b59fa08855d7eec95fd132063d645
parent6c9daf263940c9aa04a6650cb9a0fa739e897003
Bluetooth: btusb: request wake pin with NOAUTOEN

Badly-designed systems might have (for example) active-high wake pins
that default to high (e.g., because of external pull ups) until they
have an active firmware which starts driving it low.  This can cause an
interrupt storm in the time between request_irq() and disable_irq().

We don't support shared interrupts here, so let's just pre-configure the
interrupt to avoid auto-enabling it.

Fixes: ee28eb220be0 ("Bluetooth: btusb: Add out-of-band wakeup support")
Fixes: 3797f58fed3b ("arm64: dts: rockchip: move QCA6174A wakeup pin into its USB node")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/bluetooth/btusb.c