[PATCH] ASoC: codecs: wm8731: Remove unnecessary NULL check before clk_prepare_enable/clk_disable_unprepare

[Chen Ni]

clk_prepare_enable() and clk_disable_unprepare() already checked NULL
clock parameter.
Remove unneeded NULL check for wm8731->mclk here.

Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
---
 sound/soc/codecs/wm8731.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index a03bbde5d852..a2f0e2f5c407 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -471,11 +471,9 @@ static int wm8731_set_bias_level(struct snd_soc_component *component,
 
 	switch (level) {
 	case SND_SOC_BIAS_ON:
-		if (wm8731->mclk) {
-			ret = clk_prepare_enable(wm8731->mclk);
-			if (ret)
-				return ret;
-		}
+		ret = clk_prepare_enable(wm8731->mclk);
+		if (ret)
+			return ret;
 		break;
 	case SND_SOC_BIAS_PREPARE:
 		break;
@@ -494,8 +492,7 @@ static int wm8731_set_bias_level(struct snd_soc_component *component,
 		snd_soc_component_write(component, WM8731_PWR, reg | 0x0040);
 		break;
 	case SND_SOC_BIAS_OFF:
-		if (wm8731->mclk)
-			clk_disable_unprepare(wm8731->mclk);
+		clk_disable_unprepare(wm8731->mclk);
 		snd_soc_component_write(component, WM8731_PWR, 0xffff);
 		regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
 				       wm8731->supplies);
-- 
2.25.1