On Thu, Sep 18, 2014 at 08:38:09PM +0200, Michael Trimarchi wrote:

code can raise a panic when the ssi_private->pdev is null

[...] /* * If codec-handle property is missing from SSI node, we assume * that the machine driver uses new binding which does not require * SSI driver to trigger machine driver's probe. */ if (!of_get_property(np, "codec-handle", NULL)) goto done; [...] ssi_private->pdev = platform_device_register_data(&pdev->dev, name, 0, NULL, 0); [...] done: if (ssi_private->dai_fmt) _fsl_ssi_set_dai_fmt(ssi_private, ssi_private->dai_fmt);

Proposal was to not use ssi_private->pdev->dev here but adding a new parameter of *dev pointer to this _set_dai_fmt() -- passing pdev->dev in probe() and cpu_dai->dev in fsl_ssi_set_dai_fmt().

Signed-off-by: Michael Trimarchi michael@amarulasolutions.com Reported-by: Jean-Michel Hautbois jean-michel.hautbois@vodalys.com Cc: Nicolin Chen nicoleotsuka@gmail.com

Acked-by: Nicolin Chen nicoleotsuka@gmail.com

Thank you

---

sound/soc/fsl/fsl_ssi.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 87eb577..de6ab06 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -748,8 +748,9 @@ static int fsl_ssi_hw_free(struct snd_pcm_substream *substream, return 0; }

-static int _fsl_ssi_set_dai_fmt(struct fsl_ssi_private *ssi_private,

• unsigned int fmt)
  

+static int _fsl_ssi_set_dai_fmt(struct device *dev,

• 		struct fsl_ssi_private *ssi_private,
  

• 		unsigned int fmt)
  

{ struct regmap *regs = ssi_private->regs; u32 strcr = 0, stcr, srcr, scr, mask; @@ -758,7 +759,7 @@ static int _fsl_ssi_set_dai_fmt(struct fsl_ssi_private *ssi_private, ssi_private->dai_fmt = fmt;

if (fsl_ssi_is_i2s_master(ssi_private) && IS_ERR(ssi_private->baudclk)) {

• dev_err(&ssi_private->pdev->dev, "baudclk is missing which is necessary for master mode\n");
  

• dev_err(dev, "baudclk is missing which is necessary for master mode\n");
  

  return -EINVAL; }

@@ -913,7 +914,7 @@ static int fsl_ssi_set_dai_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) { struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(cpu_dai);

• return _fsl_ssi_set_dai_fmt(ssi_private, fmt);

• return _fsl_ssi_set_dai_fmt(cpu_dai->dev, ssi_private, fmt);

}

/** @@ -1387,7 +1388,8 @@ static int fsl_ssi_probe(struct platform_device *pdev)

done: if (ssi_private->dai_fmt)

• _fsl_ssi_set_dai_fmt(ssi_private, ssi_private->dai_fmt);
  

• _fsl_ssi_set_dai_fmt(&pdev->dev, ssi_private,
  

• 		     ssi_private->dai_fmt);
  
  

  return 0;

-- 1.8.1.2