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can: mcba_usb: cancel urb on -EPROTO

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When we unplug the device, we can see both -EPIPE and -EPROTO depending
on exact timing and what system we run on. If we continue to resubmit
URBs, they will immediately fail, and they can cause stalls, especially
on slower CPUs.

Fix this by not resubmitting on -EPROTO, as we already do on -EPIPE.

Signed-off-by: Martin Kelly <mkelly@xevo.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Martin Kelly 2017-12-05 10:34:03 -08:00 committed by Marc Kleine-Budde
parent 195bd525d5
commit c7f3302330
1 changed files with 1 additions and 0 deletions
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drivers/net/can/usb/mcba_usb.c
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@ -593,6 +593,7 @@ static void mcba_usb_read_bulk_callback(struct urb *urb)
case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN:
return;