On Mon, Nov 15, 2021 at 09:00:43AM +0100, Johan Hovold wrote:
commit 9aaa81c3366e8393a62374e3a1c67c69edc07b8a upstream.
Chipidea core was calling the interrupt handler from non-IRQ context with interrupts enabled, something which can lead to a deadlock if there's an actual interrupt trying to take a lock that's already held (e.g. the controller lock in udc_irq()).
Add a wrapper that can be used to fake interrupts instead of calling the handler directly.
Fixes: 3ecb3e09b042 ("usb: chipidea: Use extcon framework for VBUS and ID detect") Fixes: 876d4e1e8298 ("usb: chipidea: core: add wakeup support for extcon") Cc: Peter Chen peter.chen@kernel.org Cc: stable@vger.kernel.org # 4.4 Signed-off-by: Johan Hovold johan@kernel.org Link: https://lore.kernel.org/r/20211021083447.20078-1-johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org [ johan: backport to 4.9; adjust context ] Signed-off-by: Johan Hovold johan@kernel.org
This one should apply to 4.4 as well.
All now queued up, thanks.
greg k-h