sound: hda: fix DMA RUN bit clear issue

HDA controller stream DMA RUN bit was not cleared during the
system suspend flow within the given timeout duration to check
the status of RUN bit during the active audio in the function
snd_hdac_stream_sync. This was resulting in mc-err during the
link reset.

This can be fixed by performing stream reset for the active stream
DMA during the stream stop flow.

Bug 200552473

Change-Id: I9fe2195c3c3d7de250fd3de08ffbf3b1302db86c
Signed-off-by: Mohan Kumar <[email protected]>
Reviewed-on: https://git-master.nvidia.com/r/2220754
Reviewed-by: Viswanath L <[email protected]>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sharad Gupta <[email protected]>
Reviewed-by: mobile promotions <[email protected]>
Tested-by: mobile promotions <[email protected]>

Author: mkumard

sound/hda/hdac_stream.c

@@ -640,8 +640,15 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
 				} else {
 					/* check RUN bit is cleared */
 					if (snd_hdac_stream_readb(s, SD_CTL) &
-					    SD_CTL_DMA_START)
+					    SD_CTL_DMA_START) {
 						nwait++;
+						/* Do stream reset, if DMA RUN
+						 * bit not cleared with given
+						 * timeout
+						 */
+						if (timeout == 1)
+							snd_hdac_stream_reset(s);
+					}
 				}
 			}
 			i++;