Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755120AbbEGKjy (ORCPT ); Thu, 7 May 2015 06:39:54 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:47500 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752075AbbEGJrY (ORCPT ); Thu, 7 May 2015 05:47:24 -0400 From: Luis Henriques To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Jeremiah Mahler , Johan Hovold , Luis Henriques Subject: [PATCH 3.16.y-ckt 041/180] usb: serial: silence all non-critical read errors Date: Thu, 7 May 2015 10:44:10 +0100 Message-Id: <1430991989-23170-42-git-send-email-luis.henriques@canonical.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1430991989-23170-1-git-send-email-luis.henriques@canonical.com> References: <1430991989-23170-1-git-send-email-luis.henriques@canonical.com> X-Extended-Stable: 3.16 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1607 Lines: 44 3.16.7-ckt11 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Jeremiah Mahler commit aa8e22128b40590b291cd13512098bf258a7e6c5 upstream. 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 Signed-off-by: Johan Hovold Signed-off-by: Luis Henriques --- 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 904ab353ecf2..c44b911937e8 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -374,7 +374,7 @@ 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/