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ALSA: pcm - Reset invalid position even without debug option

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Always reset the invalind hw_ptr position returned by the pointer
callback.  The behavior should be consitent independently from the
debug option.

Also, add the printk_ratelimit() check to avoid flooding debug
prints.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-03-19 10:01:47 +01:00
parent 98204646f2
commit 5f513e1197
1 changed files with 7 additions and 3 deletions
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10
sound/core/pcm_lib.c
View file

@ -159,11 +159,15 @@ snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
pos = substream->ops->pointer(substream);
if (pos == SNDRV_PCM_POS_XRUN)
return pos; /* XRUN */
#ifdef CONFIG_SND_DEBUG
if (pos >= runtime->buffer_size) {
snd_printk(KERN_ERR "BUG: stream = %i, pos = 0x%lx, buffer size = 0x%lx, period size = 0x%lx\n", substream->stream, pos, runtime->buffer_size, runtime->period_size);
if (printk_ratelimit()) {
snd_printd(KERN_ERR "BUG: stream = %i, pos = 0x%lx, "
"buffer size = 0x%lx, period size = 0x%lx\n",
substream->stream, pos, runtime->buffer_size,
runtime->period_size);
}
pos = 0;
}
#endif
pos -= pos % runtime->min_align;
return pos;
}