Messages in this thread Patch in this message | | | From | Ben Hutchings <> | Date | Wed, 28 Feb 2018 15:20:18 +0000 | Subject | [PATCH 3.16 070/254] can: usb_8dev: cancel urb on -EPIPE and -EPROTO |
| |
3.16.55-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Martin Kelly <mkelly@xevo.com>
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: Ben Hutchings <ben@decadent.org.uk> --- drivers/net/can/usb/usb_8dev.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -527,6 +527,8 @@ static void usb_8dev_read_bulk_callback( break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return;
| |