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ASoC: fsl: imx-audmux: Check the return value from clk_prepare_enable()

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clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Fabio Estevam 2013-07-21 13:39:08 -03:00 committed by Mark Brown
parent f3142807fd
commit 72192366f4
1 changed files with 12 additions and 4 deletions
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16
sound/soc/fsl/imx-audmux.c
View file

@ -73,8 +73,11 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
if (!buf)
return -ENOMEM;
if (audmux_clk)
clk_prepare_enable(audmux_clk);
if (audmux_clk) {
ret = clk_prepare_enable(audmux_clk);
if (ret)
return ret;
}
ptcr = readl(audmux_base + IMX_AUDMUX_V2_PTCR(port));
pdcr = readl(audmux_base + IMX_AUDMUX_V2_PDCR(port));
@ -224,14 +227,19 @@ EXPORT_SYMBOL_GPL(imx_audmux_v1_configure_port);
int imx_audmux_v2_configure_port(unsigned int port, unsigned int ptcr,
unsigned int pdcr)
{
int ret;
if (audmux_type != IMX31_AUDMUX)
return -EINVAL;
if (!audmux_base)
return -ENOSYS;
if (audmux_clk)
clk_prepare_enable(audmux_clk);
if (audmux_clk) {
ret = clk_prepare_enable(audmux_clk);
if (ret)
return ret;
}
writel(ptcr, audmux_base + IMX_AUDMUX_V2_PTCR(port));
writel(pdcr, audmux_base + IMX_AUDMUX_V2_PDCR(port));