diff options
| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-07-21 13:39:08 -0300 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-07-22 00:58:36 +0100 |
| commit | 72192366f4e1385fe6e44600aa5b75d0136e3d52 (patch) | |
| tree | 28d9e8abc89a7f43c412c465eaf4ad0fa65a46f8 /sound/soc/fsl/imx-audmux.c | |
| parent | f3142807fdb965a7ae1c3a8a6fd91ff92a8efa7a (diff) | |
| download | linux-72192366f4e1385fe6e44600aa5b75d0136e3d52.tar.bz2 | |
ASoC: fsl: imx-audmux: Check the return value from clk_prepare_enable()
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>
Diffstat (limited to 'sound/soc/fsl/imx-audmux.c')
| -rw-r--r-- | sound/soc/fsl/imx-audmux.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c index e260f1f899db..1a5da1e13077 100644 --- a/sound/soc/fsl/imx-audmux.c +++ b/sound/soc/fsl/imx-audmux.c @@ -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)); |