usb: gadget: udc: at91: add IRQ check

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The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to devm_request_irq() (which takes
*unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original
error code. Stop calling devm_request_irq() with the invalid IRQ #s.

Fixes: 8b2e76687b ("USB: AT91 UDC updates, mostly power management")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/6654a224-739a-1a80-12f0-76d920f87b6c@omp.ru
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Sergey Shtylyov 2021-08-09 23:27:28 +03:00 • committed by Greg Kroah-Hartman

parent 1750069567

commit 50855c3157

1 changed files with 3 additions and 1 deletions

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drivers/usb/gadget/udc/at91_udc.c

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