Commit bd352e1a authored Dec 05, 2017 by Martin Kelly Committed by Marc Kleine-Budde Dec 08, 2017

can: ems_usb: cancel urb on -EPIPE and -EPROTO



In mcba_usb, we have observed that when you unplug the device, the driver will
endlessly resubmit failing URBs, which can cause CPU stalls. This issue
is fixed in mcba_usb by catching the codes seen on device disconnect
(-EPIPE and -EPROTO).

This driver also resubmits in the case of -EPIPE and -EPROTO, so fix it
in the same way.

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 c7f33023

drivers/net/can/usb/ems_usb.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -288,6 +288,8 @@ static void ems_usb_read_interrupt_callback(struct urb *urb)

		case -ECONNRESET: /* unlink */
		case -ENOENT:
		case -EPIPE:
		case -EPROTO:
		case -ESHUTDOWN:
		return;