From: Martin Kelly <mkelly@xevo.com>
Date: Tue, 5 Dec 2017 19:15:47 +0000 (-0800)
Subject: can: ems_usb: cancel urb on -EPIPE and -EPROTO
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd12eb784eddfefabb27bdab05fdf1c29f55b404;p=pandora-kernel.git

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

commit bd352e1adfe0d02d3ea7c8e3fb19183dc317e679 upstream.

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>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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