can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
authorMartin Kelly <mkelly@xevo.com>
Tue, 5 Dec 2017 19:15:49 +0000 (11:15 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 14 Dec 2017 08:28:10 +0000 (09:28 +0100)
commit4665483e4797f86e0d4286f7ca8d73353046f073
tree8a65cc0e9ac995d5f67cf47957dff711aa5955b4
parentd724a677f0c1dfcfea43985f54a0a65429f6199f
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO

commit 6aa8d5945502baf4687d80de59b7ac865e9e666b 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/can/usb/kvaser_usb.c