[PATCH] ASoC: codecs: fix out-of-bounds access on invalid clock config

[Qasim Ijaz <qasdev00@gmail.com>]

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get_coeff() returns –EINVAL when no table entry matches. 
The driver then uses that value as an index into coeff_div[],
causing an OOB access.

To fix lets abort the hw_params call instead.

Fixes: de2b3119f9f7 ("ASoC: codecs: add support for ES8375")
Signed-off-by: Qasim Ijaz <qasdev00@gmail.com>
---
 sound/soc/codecs/es8375.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/es8375.c b/sound/soc/codecs/es8375.c
index decc86c92427..009259632107 100644
--- a/sound/soc/codecs/es8375.c
+++ b/sound/soc/codecs/es8375.c
@@ -319,6 +319,7 @@ static int es8375_hw_params(struct snd_pcm_substream *substream,
 	coeff = get_coeff(es8375->vddd, dmic_enable, es8375->mclk_freq, params_rate(params));
 	if (coeff < 0) {
 		dev_warn(component->dev, "Clock coefficients do not match");
+		return coeff;
 	}
 	regmap_write(es8375->regmap, ES8375_CLK_MGR4,
 			coeff_div[coeff].Reg0x04);
-- 
2.39.5