Patch "can: ems_usb: cancel urb on -EPIPE and -EPROTO" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

can: ems_usb: cancel urb on -EPIPE and -EPROTO

to the 4.14-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-ems_usb-cancel-urb-on-epipe-and-eproto.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Martin Kelly <[email protected]>
Date: Tue, 5 Dec 2017 11:15:47 -0800
Subject: can: ems_usb: cancel urb on -EPIPE and -EPROTO

From: Martin Kelly <[email protected]>

commit bd352e1adfe0d02d3ea7c8e3fb19183dc317e679 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.

---
 drivers/net/can/usb/ems_usb.c |    2 ++
 1 file changed, 2 insertions(+)

@@ -288,6 +288,8 @@ static void ems_usb_read_interrupt_callb
 
 	case -ECONNRESET: /* unlink */
 	case -ENOENT:
+	case -EPIPE:
+	case -EPROTO:
 	case -ESHUTDOWN:
 		return;
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/can-ems_usb-cancel-urb-on-epipe-and-eproto.patch queue-4.14/can-mcba_usb-fix-device-disconnect-bug.patch queue-4.14/can-esd_usb2-cancel-urb-on-epipe-and-eproto.patch queue-4.14/can-usb_8dev-cancel-urb-on-epipe-and-eproto.patch queue-4.14/can-kvaser_usb-cancel-urb-on-epipe-and-eproto.patch queue-4.14/can-mcba_usb-cancel-urb-on-eproto.patch