From: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Date: Mon, 17 May 2010 11:21:46 +0000 (+0300)
Subject: ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2d4cdd6fc974716555fcbaf7ec1d4dda22784c1b;p=linux-beck.git

ASoC: tlv320dac33: Avoid powering off while in BIAS_OFF

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@nokia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
---

diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index ad1795a83acb..bcf6d934499a 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;