Commit bd424bd1 authored by Martin Kelly's avatar Martin Kelly Committed by Greg Kroah-Hartman

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

commit 6aa8d594 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: default avatarMartin Kelly <mkelly@xevo.com>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3e3dabd8
......@@ -1322,6 +1322,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb)
case 0:
break;
case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN:
return;
default:
......
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