From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 28 Nov 2011 21:16:56 +0000 (+0000)
Subject: ASoC: Error out if we can't generate a LRCLK at all for WM8994
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fc07ecd851bd082265b52838eff12f50b88f6114;p=linux-beck.git

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

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

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);