diff options
| author | Martin Kelly <mkelly@xevo.com> | 2017-12-05 11:15:49 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-14 09:28:10 +0100 |
| commit | 4665483e4797f86e0d4286f7ca8d73353046f073 (patch) | |
| tree | 8a65cc0e9ac995d5f67cf47957dff711aa5955b4 /drivers/net | |
| parent | d724a677f0c1dfcfea43985f54a0a65429f6199f (diff) | |
can: kvaser_usb: cancel urb on -EPIPE and -EPROTO
commit 6aa8d5945502baf4687d80de59b7ac865e9e666b 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>
Diffstat (limited to 'drivers/net')
| -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 e719b907745e..c9d61a6dfb7a 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: |