[alsa-devel] [PATCH 2/2] ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF

[Peter Ujfalusi]

Avoid calling the dac33_hard_power when the codec was
already in BIAS_OFF state.
This could happen in device suspend and module removal
time.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at nokia.com>
---
 sound/soc/codecs/tlv320dac33.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index ad1795a..bcf6d93 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -589,6 +589,9 @@ static int dac33_set_bias_level(struct snd_soc_codec *codec,
 		}
 		break;
 	case SND_SOC_BIAS_OFF:
+		/* Do not power off, when the codec is already off */
+		if (codec->bias_level == SND_SOC_BIAS_OFF)
+			return 0;
 		ret = dac33_hard_power(codec, 0);
 		if (ret != 0)
 			return ret;
-- 
1.7.1