Commit a5065eb6 authored by Tim Gardner's avatar Tim Gardner Committed by Takashi Iwai

ALSA: usb-audio: Suppress repetitive debug messages from retire_playback_urb()

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_<level>_ratelimited to printk_ratelimit
+	if (printk_ratelimit() &&

Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Eldad Zack <eldad@fogrefinery.com>
Cc: Daniel Mack <zonque@gmail.com>
Cc: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTim Gardner <tim.gardner@canonical.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 50487c3a
...@@ -1501,7 +1501,8 @@ static void retire_playback_urb(struct snd_usb_substream *subs, ...@@ -1501,7 +1501,8 @@ static void retire_playback_urb(struct snd_usb_substream *subs,
* The error should be lower than 2ms since the estimate relies * The error should be lower than 2ms since the estimate relies
* on two reads of a counter updated every ms. * 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)
dev_dbg(&subs->dev->dev, dev_dbg(&subs->dev->dev,
"delay: estimated %d, actual %d\n", "delay: estimated %d, actual %d\n",
est_delay, subs->last_delay); est_delay, subs->last_delay);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment