diff options
| author | Martin Kelly <mkelly@xevo.com> | 2017-12-05 11:15:49 -0800 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2017-12-08 10:45:11 +0100 |
| commit | 6aa8d5945502baf4687d80de59b7ac865e9e666b (patch) | |
| tree | fd4a4304e341feb1d63897091bdcb302263c4ac6 | |
| parent | 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 (diff) | |
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
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>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/usb/kvaser_usb.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c index f95945915d20..63587b8e6825 100644 --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -1326,6 +1326,8 @@ static void kvaser_usb_read_bulk_callback(struct urb *urb) case 0: break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; default: |