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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>
This commit is contained in:
Arvind Yadav 2017-07-25 15:44:34 +05:30 committed by Mark Brown
parent 5771a8c088
commit eae37345c8
1 changed files with 17 additions and 4 deletions
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21
sound/soc/jz4740/jz4740-i2s.c
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@ -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,