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can: mcba_usb: cancel urb on -EPROTO

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commit c7f3302330 upstream.

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>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Martin Kelly
2017-12-05 10:34:03 -08:00
committed by Greg Kroah-Hartman
parent d04d52a6f2
commit b96f17231d
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;