From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:54220 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753502AbeBES0l (ORCPT ); Mon, 5 Feb 2018 13:26:41 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hans de Goede , Oliver Neukum Subject: [PATCH 3.18 26/36] USB: cdc-acm: Do not log urb submission errors on disconnect Date: Mon, 5 Feb 2018 10:23:54 -0800 Message-Id: <20180205182352.852726086@linuxfoundation.org> In-Reply-To: <20180205182351.774761393@linuxfoundation.org> References: <20180205182351.774761393@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hans de Goede commit f0386c083c2ce85284dc0b419d7b89c8e567c09f upstream. When disconnected sometimes the cdc-acm driver logs errors like these: [20278.039417] cdc_acm 2-2:2.1: urb 9 failed submission with -19 [20278.042924] cdc_acm 2-2:2.1: urb 10 failed submission with -19 [20278.046449] cdc_acm 2-2:2.1: urb 11 failed submission with -19 [20278.049920] cdc_acm 2-2:2.1: urb 12 failed submission with -19 [20278.053442] cdc_acm 2-2:2.1: urb 13 failed submission with -19 [20278.056915] cdc_acm 2-2:2.1: urb 14 failed submission with -19 [20278.060418] cdc_acm 2-2:2.1: urb 15 failed submission with -19 Silence these by not logging errors when the result is -ENODEV. Signed-off-by: Hans de Goede Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -381,7 +381,7 @@ static int acm_submit_read_urb(struct ac res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&acm->data->dev, "%s - usb_submit_urb failed: %d\n", __func__, res);