/* pointer callback */
static snd_pcm_uframes_t snd_vortex_pcm_pointer(struct snd_pcm_substream
*substream)
{
vortex_t *chip = snd_pcm_substream_chip(substream);
stream_t *stream = (stream_t *) substream->runtime->private_data;
int dma = stream->dma;
snd_pcm_uframes_t current_ptr = 0;
spin_lock(&chip->lock);
if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) current_ptr =
vortex_adbdma_getlinearpos(chip, dma);
#ifndef CHIP_AU8810
else current_ptr = vortex_wtdma_getlinearpos(chip, dma);
#endif
//printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
spin_unlock(&chip->lock);
return (bytes_to_frames(substream->runtime, current_ptr)); }
It mean current_ptr is incorrect when return value is greater than
buffer size
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https://bugs.launchpad.net/bugs/1551041
Title:
snd_au8820 0000:01:04.0: BUG: , pos = 16386, buffer size = 16384,
period size = 1024
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