ASoC: imx-audmux: remove null check of audmux_base in audmux_read_file

When audmux_read_file is called, it means the driver is already
initialised successfully, so we don't need to check audmux_base.

It also fix smatch warning:
sound/soc/fsl/imx-audmux.c:78 audmux_read_file() warn: possible memory leak of 'buf'

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 0 insertions, 3 deletions

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index e7c800ebbd75..524ce6210cee 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -74,9 +74,6 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf,
         if (!buf)
                 return -ENOMEM;
 
-        if (!audmux_base)
-                return -ENOSYS;
-
         if (audmux_clk)
                 clk_prepare_enable(audmux_clk);