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| author | Johan Hovold <johan@kernel.org> | 2021-10-21 10:34:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-22 11:14:12 +0200 |
| commit | 9aaa81c3366e8393a62374e3a1c67c69edc07b8a (patch) | |
| tree | a36601e13a9565509c0dd1edaec5108c0f1e0924 /drivers/usb/chipidea/ci_hdrc_msm.c | |
| parent | 21b5fcdccb32ff09b6b63d4a83c037150665a83f (diff) | |
| download | linux-9aaa81c3366e8393a62374e3a1c67c69edc07b8a.tar.gz | |
USB: chipidea: fix interrupt deadlock
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>
Diffstat (limited to 'drivers/usb/chipidea/ci_hdrc_msm.c')
0 files changed, 0 insertions, 0 deletions