From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20120124023925.017321760@clark.kroah.org> Date: Mon, 23 Jan 2012 18:33:52 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Takashi Iwai Subject: [012/129] ALSA: usb-audio - Avoid flood of frame-active debug messages In-Reply-To: <20120124024041.GA18422@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ Content-Length: 1281 Lines: 39 From: Takashi Iwai commit 80c8a2a372599e604b04a9c568952fe39cd1851d upstream. With some buggy devices, the usb-audio driver may give "frame xxx active" kernel messages too often. Better to keep it as debug-only using snd_printdd(), and also add the rate-limit for avoiding floods. Bugzilla: https://bugzilla.novell.com/show_bug.cgi?id=738681 Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/usb/endpoint.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/sound/usb/endpoint.c +++ b/sound/usb/endpoint.c @@ -17,6 +17,7 @@ #include #include +#include #include #include @@ -458,8 +459,8 @@ static int retire_capture_urb(struct snd for (i = 0; i < urb->number_of_packets; i++) { cp = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; - if (urb->iso_frame_desc[i].status) { - snd_printd(KERN_ERR "frame %d active: %d\n", i, urb->iso_frame_desc[i].status); + if (urb->iso_frame_desc[i].status && printk_ratelimit()) { + snd_printdd("frame %d active: %d\n", i, urb->iso_frame_desc[i].status); // continue; } bytes = urb->iso_frame_desc[i].actual_length;