Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755251AbaGHA0b (ORCPT ); Mon, 7 Jul 2014 20:26:31 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:55860 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754091AbaGGXyz (ORCPT ); Mon, 7 Jul 2014 19:54:55 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jaroslav Kysela , Takashi Iwai , Eldad Zack , Daniel Mack , Clemens Ladisch , Tim Gardner Subject: [PATCH 3.14 88/94] ALSA: usb-audio: Suppress repetitive debug messages from retire_playback_urb() Date: Mon, 7 Jul 2014 16:58:18 -0700 Message-Id: <20140707235759.362657270@linuxfoundation.org> X-Mailer: git-send-email 2.0.0.254.g50f84e3 In-Reply-To: <20140707235756.780319003@linuxfoundation.org> References: <20140707235756.780319003@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tim Gardner commit a5065eb6da55b226661456e6a7435f605df98111 upstream. BugLink: http://bugs.launchpad.net/bugs/1305133 Malfunctioning or slow devices can cause a flood of dmesg SPAM. I've ignored checkpatch.pl complaints about the use of printk_ratelimit() in favour of prior art in sound/usb/pcm.c. WARNING: Prefer printk_ratelimited or pr__ratelimited to printk_ratelimit + if (printk_ratelimit() && Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Eldad Zack Cc: Daniel Mack Cc: Clemens Ladisch Signed-off-by: Tim Gardner Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/pcm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -1487,7 +1487,8 @@ static void retire_playback_urb(struct s * The error should be lower than 2ms since the estimate relies * on two reads of a counter updated every ms. */ - if (abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) + if (printk_ratelimit() && + abs(est_delay - subs->last_delay) * 1000 > runtime->rate * 2) snd_printk(KERN_DEBUG "delay: estimated %d, actual %d\n", est_delay, subs->last_delay); -- 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/