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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 14 Dec 2017 08:52:47 +0000 (09:52 +0100)
commit421b93cb0f352c84964b701cf1db2e221c187d37
tree15cb6685abf0aa951ecf3829460089127333374c
parente7a80033fd226b71bd49602052ff8242355fd4a5
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/can/usb/esd_usb2.c