This is a note to let you know that I've just added the patch titled
can: mcba_usb: fix device disconnect bug
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: can-mcba_usb-fix-device-disconnect-bug.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 stable@vger.kernel.org know about it.
From 1cb35a33a28394fd711bb26ddf3a564f4e9d9125 Mon Sep 17 00:00:00 2001
From: Martin Kelly mkelly@xevo.com Date: Mon, 27 Nov 2017 15:49:16 -0800 Subject: can: mcba_usb: fix device disconnect bug
From: Martin Kelly mkelly@xevo.com
commit 1cb35a33a28394fd711bb26ddf3a564f4e9d9125 upstream.
Currently, when you disconnect the device, the driver infinitely resubmits all URBs, so you see:
Rx URB aborted (-32)
in an infinite loop.
Fix this by catching -EPIPE (what we get in urb->status when the device disconnects) and not resubmitting.
With this patch, I can plug and unplug many times and the driver recovers correctly.
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
--- drivers/net/can/usb/mcba_usb.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/net/can/usb/mcba_usb.c +++ b/drivers/net/can/usb/mcba_usb.c @@ -592,6 +592,7 @@ static void mcba_usb_read_bulk_callback( break;
case -ENOENT: + case -EPIPE: case -ESHUTDOWN: return;
Patches currently in stable-queue which might be from mkelly@xevo.com 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