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can: esd_usb2: cancel urb on -EPIPE and -EPROTO

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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>
This commit is contained in:
Martin Kelly 2017-12-05 11:15:48 -08:00 committed by Greg Kroah-Hartman
parent d3b7225478
commit 0cdac09e6a
1 changed files with 2 additions and 0 deletions
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2
drivers/net/can/usb/esd_usb2.c
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@ -393,6 +393,8 @@ static void esd_usb2_read_bulk_callback(struct urb *urb)
break;
case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN:
return;