[alsa-devel] [PATCH 3/4] ASoC: wm8731: Check for clk_prepare_enable() error

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam at freescale.com>

clk_prepare_enable() may fail, so we should better check its return value
and propagate it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
 sound/soc/codecs/wm8731.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 915ea11..3f87e7d 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -496,8 +496,11 @@ static int wm8731_set_bias_level(struct snd_soc_codec *codec,
 
 	switch (level) {
 	case SND_SOC_BIAS_ON:
-		if (wm8731->mclk)
-			clk_prepare_enable(wm8731->mclk);
+		if (wm8731->mclk) {
+			ret = clk_prepare_enable(wm8731->mclk);
+			if (ret)
+				return ret;
+		}
 		break;
 	case SND_SOC_BIAS_PREPARE:
 		break;
-- 
1.9.1