can: usb_8dev: cancel urb on -EPIPE and -EPROTO
authorMartin Kelly <mkelly@xevo.com>
Tue, 5 Dec 2017 19:15:50 +0000 (11:15 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 14 Dec 2017 08:52:47 +0000 (09:52 +0100)
commit67464fbca35ccfbe2f5e957ff2a31334390b7947
tree3bbdc1347179eaa943abc750238a46ffb66e536c
parent421b93cb0f352c84964b701cf1db2e221c187d37
can: usb_8dev: cancel urb on -EPIPE and -EPROTO

commit 12147edc434c9e4c7c2f5fee2e5519b2e5ac34ce 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/usb_8dev.c