ASoC: jz4740: Handle return value of clk_prepare_enable.

clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 17 insertions, 4 deletions

diff --git a/sound/soc/jz4740/jz4740-i2s.c b/sound/soc/jz4740/jz4740-i2s.c
index 794a3499e567..99394c036998 100644
--- a/sound/soc/jz4740/jz4740-i2s.c
+++ b/sound/soc/jz4740/jz4740-i2s.c
@@ -133,6 +133,7 @@ static int jz4740_i2s_startup(struct snd_pcm_substream *substream,
 {
         struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
         uint32_t conf, ctrl;
+        int ret;
 
         if (dai->active)
                 return 0;
@@ -141,7 +142,9 @@ static int jz4740_i2s_startup(struct snd_pcm_substream *substream,
         ctrl |= JZ_AIC_CTRL_FLUSH;
         jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
 
-        clk_prepare_enable(i2s->clk_i2s);
+        ret = clk_prepare_enable(i2s->clk_i2s);
+        if (ret)
+                return ret;
 
         conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
         conf |= JZ_AIC_CONF_ENABLE;
@@ -352,11 +355,18 @@ static int jz4740_i2s_resume(struct snd_soc_dai *dai)
 {
         struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
         uint32_t conf;
+        int ret;
 
-        clk_prepare_enable(i2s->clk_aic);
+        ret = clk_prepare_enable(i2s->clk_aic);
+        if (ret)
+                return ret;
 
         if (dai->active) {
-                clk_prepare_enable(i2s->clk_i2s);
+                ret = clk_prepare_enable(i2s->clk_i2s);
+                if (ret) {
+                        clk_disable_unprepare(i2s->clk_aic);
+                        return ret;
+                }
 
                 conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
                 conf |= JZ_AIC_CONF_ENABLE;
@@ -387,8 +397,11 @@ static int jz4740_i2s_dai_probe(struct snd_soc_dai *dai)
 {
         struct jz4740_i2s *i2s = snd_soc_dai_get_drvdata(dai);
         uint32_t conf;
+        int ret;
 
-        clk_prepare_enable(i2s->clk_aic);
+        ret = clk_prepare_enable(i2s->clk_aic);
+        if (ret)
+                return ret;
 
         jz4740_i2c_init_pcm_config(i2s);
         snd_soc_dai_init_dma_data(dai, &i2s->playback_dma_data,