can: esd_usb2: cancel urb on -EPIPE and -EPROTO
authorMartin Kelly <mkelly@xevo.com>
Tue, 5 Dec 2017 19:15:48 +0000 (11:15 -0800)
committerBen Hutchings <ben@decadent.org.uk>
Sat, 3 Mar 2018 15:50:45 +0000 (15:50 +0000)
commited005043f1ed42c1cc717b015eb79a6beed9cad2
treedfea7f28d5f1d0b84013786f938d3301132f2968
parentdd12eb784eddfefabb27bdab05fdf1c29f55b404
can: esd_usb2: cancel urb on -EPIPE and -EPROTO

commit 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 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>
drivers/net/can/usb/esd_usb2.c