diff --git a/sound/mips/hal2.c b/sound/mips/hal2.c
index c8904e732aaa..2bd1cb7489ff 100644
--- a/sound/mips/hal2.c
+++ b/sound/mips/hal2.c
@@ -500,7 +500,8 @@ static const struct snd_pcm_hardware hal2_pcm_hw = {
 	.info = (SNDRV_PCM_INFO_MMAP |
 		 SNDRV_PCM_INFO_MMAP_VALID |
 		 SNDRV_PCM_INFO_INTERLEAVED |
-		 SNDRV_PCM_INFO_BLOCK_TRANSFER),
+		 SNDRV_PCM_INFO_BLOCK_TRANSFER |
+		 SNDRV_PCM_INFO_SYNC_APPLPTR),
 	.formats =          SNDRV_PCM_FMTBIT_S16_BE,
 	.rates =            SNDRV_PCM_RATE_8000_48000,
 	.rate_min =         8000,
@@ -577,7 +578,6 @@ static int hal2_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 	case SNDRV_PCM_TRIGGER_START:
 		hal2->dac.pcm_indirect.hw_io = hal2->dac.buffer_dma;
 		hal2->dac.pcm_indirect.hw_data = 0;
-		substream->ops->ack(substream);
 		hal2_start_dac(hal2);
 		break;
 	case SNDRV_PCM_TRIGGER_STOP: