Commit c7f33023 authored Dec 05, 2017 by Martin Kelly Committed by Marc Kleine-Budde Dec 08, 2017

can: mcba_usb: cancel urb on -EPROTO



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>

parent 195bd525

drivers/net/can/usb/mcba_usb.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -593,6 +593,7 @@ static void mcba_usb_read_bulk_callback(struct urb *urb)

		case -ENOENT:
		case -EPIPE:
		case -EPROTO:
		case -ESHUTDOWN:
		return;