Messages in this thread | | | Date | Mon, 15 Nov 2021 13:26:14 +0100 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH stable-4.9] USB: chipidea: fix interrupt deadlock |
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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
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