From: "Andrew F. Davis" <afd@ti.com>
To: "Liam Girdwood" <lgirdwood@gmail.com>,
"Mark Brown" <broonie@kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Benoît Cousson" <bcousson@baylibre.com>,
"Tony Lindgren" <tony@atomide.com>
Cc: <alsa-devel@alsa-project.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, "Andrew F . Davis" <afd@ti.com>
Subject: [PATCH 08/17] ASoC: tlv320aic31xx: Check clock and divider before division
Date: Wed, 8 Nov 2017 18:27:32 -0600 [thread overview]
Message-ID: <20171109002741.10897-9-afd@ti.com> (raw)
In-Reply-To: <20171109002741.10897-1-afd@ti.com>
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
next prev parent reply other threads:[~2017-11-09 0:28 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-09 0:27 [PATCH 00/17] Add Headphone Detection to TLV320AIC31xx Driver Andrew F. Davis
2017-11-09 0:27 ` [PATCH 01/17] ASoC: tlv320aic31xx: General source formatting cleanup Andrew F. Davis
2017-11-09 12:41 ` Mark Brown
2017-11-09 14:13 ` Andrew F. Davis
2017-11-09 16:15 ` Mark Brown
2017-11-09 0:27 ` [PATCH 02/17] ASoC: tlv320aic31xx: Reformat header file using GENMASK and BIT macros Andrew F. Davis
2017-11-09 0:27 ` [PATCH 03/17] ASoC: tlv320aic31xx: Fix GPIO1 register definition Andrew F. Davis
2017-11-09 12:45 ` Mark Brown
2017-11-09 14:32 ` Andrew F. Davis
2017-11-09 0:27 ` [PATCH 04/17] ASoC: tlv320aic31xx: Merge init function into probe Andrew F. Davis
2017-11-09 0:27 ` [PATCH 05/17] ASoC: tlv320aic31xx: Switch GPIO handling to use gpiod_* API Andrew F. Davis
2017-11-09 0:27 ` [PATCH 06/17] ASoC: tlv320aic31xx: Remove platform data Andrew F. Davis
2017-11-09 0:27 ` [PATCH 07/17] ASoC: tlv320aic31xx: Add MICBIAS off setting Andrew F. Davis
2017-11-15 15:30 ` Rob Herring
2017-11-09 0:27 ` Andrew F. Davis [this message]
2017-11-09 0:27 ` [PATCH 09/17] ASoC: tlv320aic31xx: Add CODEC clock slave support Andrew F. Davis
2017-11-09 0:27 ` [PATCH 10/17] ASoC: tlv320aic31xx: Fix inverted BCLK handling Andrew F. Davis
2017-11-09 0:27 ` [PATCH 11/17] ASoC: tlv320aic31xx: Reset registers during probe Andrew F. Davis
2017-11-09 0:27 ` [PATCH 12/17] ASoC: tlv320aic31xx: Add short circuit detection support Andrew F. Davis
2017-11-09 0:27 ` [PATCH 13/17] ASoC: tlv320aic31xx: Add overflow " Andrew F. Davis
2017-11-09 0:27 ` [PATCH 14/17] ASoC: tlv320aic31xx: Add headphone/headset detection Andrew F. Davis
2017-11-09 0:27 ` [PATCH 15/17] ASoC: tlv320aic31xx: Add button press detection Andrew F. Davis
2017-11-09 0:27 ` [PATCH 16/17] NOT FOR MERGING: Add TLV320DAC3101 to BBB for testing Andrew F. Davis
2017-11-09 0:27 ` [PATCH 17/17] NOT FOR MERGING: Add demo jack detection policy " Andrew F. Davis
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