From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50594 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752161AbdLJRHo (ORCPT ); Sun, 10 Dec 2017 12:07:44 -0500 Subject: Patch "can: esd_usb2: cancel urb on -EPIPE and -EPROTO" has been added to the 4.4-stable tree To: mkelly@xevo.com, gregkh@linuxfoundation.org, mkl@pengutronix.de Cc: , From: Date: Sun, 10 Dec 2017 18:07:38 +0100 Message-ID: <151292565811080@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: esd_usb2: cancel urb on -EPIPE and -EPROTO to the 4.4-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-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 7a31ced3de06e9878e4f9c3abe8f87d9344d8144 Mon Sep 17 00:00:00 2001 From: Martin Kelly Date: Tue, 5 Dec 2017 11:15:48 -0800 Subject: can: esd_usb2: cancel urb on -EPIPE and -EPROTO From: Martin Kelly 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 Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- 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 @@ -393,6 +393,8 @@ 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@xevo.com are queue-4.4/can-ems_usb-cancel-urb-on-epipe-and-eproto.patch queue-4.4/can-esd_usb2-cancel-urb-on-epipe-and-eproto.patch queue-4.4/can-usb_8dev-cancel-urb-on-epipe-and-eproto.patch queue-4.4/can-kvaser_usb-cancel-urb-on-epipe-and-eproto.patch