of_match_device could return NULL, and so can cause a NULL pointer dereference later.
Signed-off-by: Shailendra Verma <[email protected]> --- sound/soc/davinci/davinci-evm.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c index 731fb0d..7a369e0 100644 --- a/sound/soc/davinci/davinci-evm.c +++ b/sound/soc/davinci/davinci-evm.c @@ -358,13 +358,20 @@ static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) static int davinci_evm_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; - const struct of_device_id *match = - of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); - struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data; + const struct of_device_id *match; + struct snd_soc_dai_link *dai; struct snd_soc_card_drvdata_davinci *drvdata = NULL; struct clk *mclk; int ret = 0; + match = of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); + if (!match) { + dev_err(&pdev->dev, "Error: No device match found\n"); + return -ENODEV; + } + + dai = (struct snd_soc_dai_link *) match->data; + evm_soc_card.dai_link = dai; dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0); -- 1.7.9.5
