diff options
Diffstat (limited to 'sound/hda/hdac_stream.c')
| -rw-r--r-- | sound/hda/hdac_stream.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index d01e69139164..a314b03b4a4c 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -631,20 +631,27 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start, nwait = 0; i = 0; list_for_each_entry(s, &bus->stream_list, list) { - if (streams & (1 << i)) { - if (start) { - /* check FIFO gets ready */ - if (!(snd_hdac_stream_readb(s, SD_STS) & - SD_STS_FIFO_READY)) - nwait++; - } else { - /* check RUN bit is cleared */ - if (snd_hdac_stream_readb(s, SD_CTL) & - SD_CTL_DMA_START) - nwait++; + if (!(streams & (1 << i++))) + continue; + + if (start) { + /* check FIFO gets ready */ + if (!(snd_hdac_stream_readb(s, SD_STS) & + SD_STS_FIFO_READY)) + nwait++; + } else { + /* check RUN bit is cleared */ + if (snd_hdac_stream_readb(s, SD_CTL) & + SD_CTL_DMA_START) { + nwait++; + /* + * Perform stream reset if DMA RUN + * bit not cleared within given timeout + */ + if (timeout == 1) + snd_hdac_stream_reset(s); } } - i++; } if (!nwait) break; |