From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752134AbbAKNnS (ORCPT ); Sun, 11 Jan 2015 08:43:18 -0500 Received: from mail-yh0-f51.google.com ([209.85.213.51]:58197 "EHLO mail-yh0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751224AbbAKNnN (ORCPT ); Sun, 11 Jan 2015 08:43:13 -0500 From: Jeremiah Mahler To: Johan Hovold Cc: Greg Kroah-Hartman , linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, Jeremiah Mahler Subject: [PATCH v3 1/2] usb: serial: silence all non-critical read errors Date: Sun, 11 Jan 2015 05:42:06 -0800 Message-Id: <1420983727-5167-2-git-send-email-jmmahler@gmail.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1420983727-5167-1-git-send-email-jmmahler@gmail.com> References: <1419066698-2684-1-git-send-email-jmmahler@gmail.com> <1420983727-5167-1-git-send-email-jmmahler@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If a USB serial device is unplugged while there is an active program using the device it may spam the logs with -EPROTO (71) messages as it attempts to retry. Most serial usb drivers (metro-usb, pl2303, mos7840, ...) only output these messages for debugging. The generic driver treats these as errors. Change the default output for the generic serial driver from error to debug to silence these non-critical errors. Signed-off-by: Jeremiah Mahler --- drivers/usb/serial/generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 1bd1922..2d7207b 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -373,7 +373,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb) __func__, urb->status); return; default: - dev_err(&port->dev, "%s - nonzero urb status: %d\n", + dev_dbg(&port->dev, "%s - nonzero urb status: %d\n", __func__, urb->status); goto resubmit; } -- 2.1.4