[PATCH 11/11] ASoC: pxa-ssp: Handle return value of clk_prepare_enable.

[Arvind Yadav]

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

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 sound/soc/pxa/pxa-ssp.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index 0291c7c..dad5cf62 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -97,7 +97,10 @@ static int pxa_ssp_startup(struct snd_pcm_substream 
*substream,
        int ret = 0;
 
        if (!cpu_dai->active) {
-               clk_prepare_enable(ssp->clk);
+               ret = clk_prepare_enable(ssp->clk);
+               if (ret)
+                       return ret;
+
                pxa_ssp_disable(ssp);
        }
 
@@ -134,9 +137,13 @@ static int pxa_ssp_suspend(struct snd_soc_dai *cpu_dai)
 {
        struct ssp_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
        struct ssp_device *ssp = priv->ssp;
+       int ret;
 
-       if (!cpu_dai->active)
-               clk_prepare_enable(ssp->clk);
+       if (!cpu_dai->active) {
+               ret = clk_prepare_enable(ssp->clk);
+               if (ret)
+                       return ret;
+       }
 
        priv->cr0 = __raw_readl(ssp->mmio_base + SSCR0);
        priv->cr1 = __raw_readl(ssp->mmio_base + SSCR1);
@@ -153,8 +160,11 @@ static int pxa_ssp_resume(struct snd_soc_dai *cpu_dai)
        struct ssp_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
        struct ssp_device *ssp = priv->ssp;
        uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE;
+       int ret;
 
-       clk_prepare_enable(ssp->clk);
+       ret = clk_prepare_enable(ssp->clk);
+       if (ret)
+               return ret;
 
        __raw_writel(sssr, ssp->mmio_base + SSSR);
        __raw_writel(priv->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0);
@@ -217,6 +227,7 @@ static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai 
*cpu_dai,
        struct ssp_priv *priv = snd_soc_dai_get_drvdata(cpu_dai);
        struct ssp_device *ssp = priv->ssp;
        int val;
+       int ret = 0;
 
        u32 sscr0 = pxa_ssp_read_reg(ssp, SSCR0) &
                ~(SSCR0_ECS |  SSCR0_NCS | SSCR0_MOD | SSCR0_ACS);
@@ -260,9 +271,9 @@ static int pxa_ssp_set_dai_sysclk(struct snd_soc_dai 
*cpu_dai,
        val = pxa_ssp_read_reg(ssp, SSCR0) | sscr0;
        pxa_ssp_write_reg(ssp, SSCR0, val);
        if (ssp->type != PXA3xx_SSP)
-               clk_prepare_enable(ssp->clk);
+               ret = clk_prepare_enable(ssp->clk);
 
-       return 0;
+       return ret;
 }
 
 /*
-- 
1.9.1