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ASoC: davinci-mcasp: Fix ruledata setup in davinci_mcasp_startup 

Passing &mcasp->ruledata[dir] to snd_pcm_hw_rule_add() is not correct since
commit:
7b3d165a28 ASoC: davinci-mcasp: Index ruledata in drvdata with substream->stream
now sets up the struct based on the substream->stream (0 or 1) while we pass
a pointer which we take with dir (1 or 2). This will lead kernel crash.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2015-04-07 14:03:53 +03:00 committed by Mark Brown
parent 7b3d165a28
commit 4cd9db0859
1 changed files with 7 additions and 5 deletions
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12
sound/soc/davinci/davinci-mcasp.c
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@ -1128,6 +1128,8 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
struct davinci_mcasp_ruledata *ruledata =
&mcasp->ruledata[substream->stream];
u32 max_channels = 0;
int i, dir;
@ -1149,7 +1151,7 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
if (mcasp->serial_dir[i] == dir)
max_channels++;
}
mcasp->ruledata[substream->stream].serializers = max_channels;
ruledata->serializers = max_channels;
max_channels *= mcasp->tdm_slots;
/*
* If the already active stream has less channels than the calculated
@ -1172,12 +1174,12 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
if (mcasp->bclk_master && mcasp->bclk_div == 0 && mcasp->sysclk_freq) {
int ret;
mcasp->ruledata[substream->stream].mcasp = mcasp;
ruledata->mcasp = mcasp;
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
davinci_mcasp_hw_rule_rate,
&mcasp->ruledata[dir],
ruledata,
SNDRV_PCM_HW_PARAM_FORMAT,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (ret)
@ -1185,7 +1187,7 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_FORMAT,
davinci_mcasp_hw_rule_format,
&mcasp->ruledata[dir],
ruledata,
SNDRV_PCM_HW_PARAM_RATE,
SNDRV_PCM_HW_PARAM_CHANNELS, -1);
if (ret)
@ -1193,7 +1195,7 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
ret = snd_pcm_hw_rule_add(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS,
davinci_mcasp_hw_rule_channels,
&mcasp->ruledata[dir],
ruledata,
SNDRV_PCM_HW_PARAM_RATE,
SNDRV_PCM_HW_PARAM_FORMAT, -1);
if (ret)