ASoC: fsl_sai: Drop useless channels check in hw_params()

SAi only supports two data channels on hardware level and the driver also does
register the min->1 and max->2, so no need to check channels.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Reviewed-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
(cherry picked from commit d22e28cce80a93578787d273bf1fa26a2be2636b)

1 files changed, 1 insertions, 4 deletions

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index e68102e63521..8450bff6fb13 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -278,10 +278,7 @@ static int fsl_sai_hw_params(struct snd_pcm_substream *substream,
                 val_cr5 |= FSL_SAI_CR5_FBT(0);
 
         val_cr4 |= FSL_SAI_CR4_FRSZ(channels);
-        if (channels == 2 || channels == 1)
-                val_mr = ~0UL - ((1 << channels) - 1);
-        else
-                return -EINVAL;
+        val_mr = ~0UL - ((1 << channels) - 1);
 
         sai_writel(sai, val_cr4, sai->base + reg_cr4);
         sai_writel(sai, val_cr5, sai->base + reg_cr5);