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can: usb_8dev: cancel urb on -EPIPE and -EPROTO

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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>
This commit is contained in:
Martin Kelly 2017-12-05 11:15:50 -08:00 committed by Greg Kroah-Hartman
parent 421b93cb0f
commit 67464fbca3
1 changed files with 2 additions and 0 deletions
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2
drivers/net/can/usb/usb_8dev.c
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@ -524,6 +524,8 @@ static void usb_8dev_read_bulk_callback(struct urb *urb)
break; break;
case -ENOENT: case -ENOENT:
case -EPIPE:
case -EPROTO:
case -ESHUTDOWN: case -ESHUTDOWN:
return; return;