This is a note to let you know that I've just added the patch titled can: esd_usb2: cancel urb on -EPIPE and -EPROTO to the 3.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: can-esd_usb2-cancel-urb-on-epipe-and-eproto.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 Mon Sep 17 00:00:00 2001 From: Martin Kelly <mkelly@xxxxxxxx> Date: Tue, 5 Dec 2017 11:15:48 -0800 Subject: can: esd_usb2: cancel urb on -EPIPE and -EPROTO From: Martin Kelly <mkelly@xxxxxxxx> commit 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 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@xxxxxxxx> Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/can/usb/esd_usb2.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/can/usb/esd_usb2.c +++ b/drivers/net/can/usb/esd_usb2.c @@ -395,6 +395,8 @@ static void esd_usb2_read_bulk_callback( break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; Patches currently in stable-queue which might be from mkelly@xxxxxxxx are queue-3.18/can-ems_usb-cancel-urb-on-epipe-and-eproto.patch queue-3.18/can-esd_usb2-cancel-urb-on-epipe-and-eproto.patch queue-3.18/can-usb_8dev-cancel-urb-on-epipe-and-eproto.patch queue-3.18/can-kvaser_usb-cancel-urb-on-epipe-and-eproto.patch