ASoC: Error out if we can't generate a LRCLK at all for WM8994

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index 9c982e47eb99..36ba1edfff80 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -2357,6 +2357,11 @@ static int wm8994_hw_params(struct snd_pcm_substream *substream,
         bclk |= best << WM8994_AIF1_BCLK_DIV_SHIFT;
 
         lrclk = bclk_rate / params_rate(params);
+        if (!lrclk) {
+                dev_err(dai->dev, "Unable to generate LRCLK from %dHz BCLK\n",
+                        bclk_rate);
+                return -EINVAL;
+        }
         dev_dbg(dai->dev, "Using LRCLK rate %d for actual LRCLK %dHz\n",
                 lrclk, bclk_rate / lrclk);