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

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commit bd352e1adf 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: Ben Hutchings <ben@decadent.org.uk>

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Martin Kelly 2017-12-05 11:15:47 -08:00 • committed by Ben Hutchings

parent eee038bc5f

commit bf1d2a01ef

1 changed files with 2 additions and 0 deletions

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drivers/net/can/usb/ems_usb.c

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