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Subject[PATCH 06/11] ASoC: mxs-saif: Handle return value of clk_prepare_enable/clk_prepare.
Date
clk_prepare_enable() and clk_prepare() can fail here and
we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
sound/soc/mxs/mxs-saif.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index b42f301..156aa7c 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -125,7 +125,9 @@ static int mxs_saif_set_clk(struct mxs_saif *saif,
*
* If MCLK is not used, we just set saif clk to 512*fs.
*/
- clk_prepare_enable(master_saif->clk);
+ ret = clk_prepare_enable(master_saif->clk);
+ if (ret)
+ return ret;

if (master_saif->mclk_in_use) {
switch (mclk / rate) {
@@ -388,6 +390,7 @@ static int mxs_saif_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct mxs_saif *saif = snd_soc_dai_get_drvdata(cpu_dai);
+ int ret;

/* clear error status to 0 for each re-open */
saif->fifo_underrun = 0;
@@ -401,7 +404,9 @@ static int mxs_saif_startup(struct snd_pcm_substream *substream,
__raw_writel(BM_SAIF_CTRL_CLKGATE,
saif->base + SAIF_CTRL + MXS_CLR_ADDR);

- clk_prepare(saif->clk);
+ ret = clk_prepare(saif->clk);
+ if (ret)
+ return ret;

return 0;
}
@@ -468,7 +473,9 @@ static int mxs_saif_hw_params(struct snd_pcm_substream *substream,
if (ret)
return ret;

- clk_prepare(master_saif->clk);
+ ret = clk_prepare(master_saif->clk);
+ if (ret)
+ return ret;
}

scr = __raw_readl(saif->base + SAIF_CTRL);
--
1.9.1
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