diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index 40c07e756481..f7f2d29f1bfe 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -151,12 +151,9 @@ static inline int get_clk_div(struct fsl_micfil *micfil,
 {
 	u32 ctrl2_reg;
 	long mclk_rate;
-	int osr;
 	int clk_div;
 
 	regmap_read(micfil->regmap, REG_MICFIL_CTRL2, &ctrl2_reg);
-	osr = 16 - ((ctrl2_reg & MICFIL_CTRL2_CICOSR_MASK)
-		    >> MICFIL_CTRL2_CICOSR_SHIFT);
 
 	mclk_rate = clk_get_rate(micfil->mclk);