From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-449106-1519833331-2-15760920234507399035 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.249, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='uk', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1519833330; b=DvlSvfi9PybHUQLVE8321n7Fb637i50ddCAWSG7ET8oFgxG O0wnbDGepyUzIcNd2eSDcEjnrlFTQqZscff1Br9zTXDgb8Temrmr9JJBf0JMLCfg /3QHhXnc+vmobSmWyxdyVuHuABT2l2413c0/55pAc4MTKe2lGLG3lwhmqS5FkFRL cAPB5FsJTnHDZqyYKTWp87XAeXGecKa1QabbACQYejyLFJmKVdXgSoWNaU0Bq7Lr 32lca0AqLumFX9JvNFIG40IhCMX5Nh6OumjSVoJvdT7yBYGa0R4UkkcUJAVglnrz CwC4glzMRGQr6cbqkhkFVA2EyjM33kdtSev6F7g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:content-transfer-encoding :mime-version:from:to:cc:date:message-id:subject:in-reply-to :sender:list-id; s=arctest; t=1519833330; bh=vlooNmcNMSg6jBSjKIT 0FImsdsG1UO81o1kYVX7PLHc=; b=gTNk9IiU5HVMOvWwm4nIi9vA+rzZLhF5fj7 m9F+RoNUYnlpbF8M6pMlcdg8cKd4TBPvFFabgV4sJH0L2ZLWZT3zgAj7V8VwrLYH Ie4EecO0gBnBoRC0Voxj2Ro/q8/CQgHGzLnOiGFXK4/O7V7teM3vxh29vOALJGI4 qEXjQa3tUNv0AynvrbTjNQA5GkIiEoWfd5/gq5KiI50uZKTJmX6FspzSAZDVEqSr 7vRTynghsj2eych7C9eIBF62ENpDxCSQcXgyaInsg5ZWr0Hj5LmgN48p+qgv4SlX EIwxTmIQOJjmk9d7IYYq68sc6NPmA1QSjg/drKoFUnqZYsBXMWA== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=decadent.org.uk; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=decadent.org.uk header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933991AbeB1PxU (ORCPT ); Wed, 28 Feb 2018 10:53:20 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:34442 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933722AbeB1PxT (ORCPT ); Wed, 28 Feb 2018 10:53:19 -0500 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Marc Kleine-Budde" , "Martin Kelly" Date: Wed, 28 Feb 2018 15:20:18 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 069/254] can: kvaser_usb: cancel urb on -EPIPE and -EPROTO In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 3.16.55-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Martin Kelly commit 6aa8d5945502baf4687d80de59b7ac865e9e666b 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: Ben Hutchings --- drivers/net/can/usb/kvaser_usb.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/can/usb/kvaser_usb.c +++ b/drivers/net/can/usb/kvaser_usb.c @@ -975,6 +975,8 @@ static void kvaser_usb_read_bulk_callbac case 0: break; case -ENOENT: + case -EPIPE: + case -EPROTO: case -ESHUTDOWN: return; default: