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authorMartin Kelly <mkelly@xevo.com>2017-12-05 11:15:49 -0800
committerMarc Kleine-Budde <mkl@pengutronix.de>2017-12-08 10:45:11 +0100
commit6aa8d5945502baf4687d80de59b7ac865e9e666b (patch)
treefd4a4304e341feb1d63897091bdcb302263c4ac6 /drivers
parent7a31ced3de06e9878e4f9c3abe8f87d9344d8144 (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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/can/usb/kvaser_usb.c2
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: