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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>
Sat, 16 Dec 2017 09:33:47 +0000 (10:33 +0100)
commitbd424bd1757291ba95c4c47f35ea5c955a4b3e42
treee94c63f7cf7b0c8cb2904c7463293f1c37cb73b3
parent3e3dabd83630a66def375442c55fc78b9723e81a
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