From: Pardha Saradhi K pardha.saradhi.kesapragada@intel.com
Detect the timeout while modifying HDA DMA related Registers for stream reset and print them to console for user information
Signed-off-by: Pardha Saradhi K pardha.saradhi.kesapragada@intel.com Signed-off-by: Sriram Periyasamy sriramx.periyasamy@intel.com --- sound/hda/hdac_stream.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/sound/hda/hdac_stream.c b/sound/hda/hdac_stream.c index 33c8ced528f6..aa8a2884289f 100644 --- a/sound/hda/hdac_stream.c +++ b/sound/hda/hdac_stream.c @@ -144,6 +144,10 @@ void snd_hdac_stream_reset(struct hdac_stream *azx_dev) if (val) break; } while (--timeout); + + if (!timeout) + dev_err(azx_dev->bus->dev, "timeout on stream reset entry\n"); + val &= ~SD_CTL_STREAM_RESET; snd_hdac_stream_writeb(azx_dev, SD_CTL, val); udelay(3); @@ -157,6 +161,9 @@ void snd_hdac_stream_reset(struct hdac_stream *azx_dev) break; } while (--timeout);
+ if (!timeout) + dev_err(azx_dev->bus->dev, "timeout on stream reset exit\n"); + /* reset first position - may not be synced with hw at this time */ if (azx_dev->posbuf) *azx_dev->posbuf = 0;