From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50494 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751743AbdLJRHG (ORCPT ); Sun, 10 Dec 2017 12:07:06 -0500 Subject: Patch "can: mcba_usb: cancel urb on -EPROTO" has been added to the 4.14-stable tree To: mkelly@xevo.com, gregkh@linuxfoundation.org, mkl@pengutronix.de Cc: , From: Date: Sun, 10 Dec 2017 18:07:02 +0100 Message-ID: <1512925622141140@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled can: mcba_usb: cancel urb on -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-mcba_usb-cancel-urb-on-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 know about it. >>From c7f33023308f3142433b7379718af5f0c2c322a6 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Tue, 5 Dec 2017 10:34:03 -0800 Subject: can: mcba_usb: cancel urb on -EPROTO From: Martin Kelly commit c7f33023308f3142433b7379718af5f0c2c322a6 upstream. When we unplug the device, we can see both -EPIPE and -EPROTO depending on exact timing and what system we run on. If we continue to resubmit URBs, they will immediately fail, and they can cause stalls, especially on slower CPUs. Fix this by not resubmitting on -EPROTO, as we already do on -EPIPE. Signed-off-by: Martin Kelly Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- 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 @@ -593,6 +593,7 @@ static void mcba_usb_read_bulk_callback( case -ENOENT: case -EPIPE: + case -EPROTO: 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