lkml.org 
[lkml]   [2017]   [Nov]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/17] ASoC: tlv320aic31xx: Check clock and divider before division
Date
If our set_sysclk DAI callback has not been called yet p_div will be 0
and dividing by this will cause an error. Print an error message and
leave before this.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
sound/soc/codecs/tlv320aic31xx.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c
index e8eb3de7af7b..95518eabd7e8 100644
--- a/sound/soc/codecs/tlv320aic31xx.c
+++ b/sound/soc/codecs/tlv320aic31xx.c
@@ -763,11 +763,17 @@ static int aic31xx_setup_pll(struct snd_soc_codec *codec,
{
struct aic31xx_priv *aic31xx = snd_soc_codec_get_drvdata(codec);
int bclk_score = snd_soc_params_to_frame_size(params);
- int mclk_p = aic31xx->sysclk / aic31xx->p_div;
+ int mclk_p;
int bclk_n = 0;
int match = -1;
int i;

+ if (!aic31xx->sysclk || !aic31xx->p_div) {
+ dev_err(codec->dev, "Master clock not supplied\n");
+ return -EINVAL;
+ }
+ mclk_p = aic31xx->sysclk / aic31xx->p_div;
+
/* Use PLL as CODEC_CLKIN and DAC_CLK as BDIV_CLKIN */
snd_soc_update_bits(codec, AIC31XX_CLKMUX,
AIC31XX_CODEC_CLKIN_MASK, AIC31XX_CODEC_CLKIN_PLL);
--
2.15.0
\
 
 \ /
  Last update: 2017-11-09 01:29    [W:0.099 / U:2.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site