diff options
| author | Shailendra Verma <shailendra.v@samsung.com> | 2017-01-27 12:10:57 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-01-27 12:58:54 +0100 |
| commit | 3f81d9aa80ae4b513416440e416a6486ef2ad817 (patch) | |
| tree | 5757171f3fcac3c89859764354ac93945f258e64 /sound/soc/davinci | |
| parent | Merge remote-tracking branches 'asoc/topic/wm9712', 'asoc/topic/wm9713' and '... (diff) | |
| download | linux-3f81d9aa80ae4b513416440e416a6486ef2ad817.tar.xz linux-3f81d9aa80ae4b513416440e416a6486ef2ad817.zip | |
ASoC: davinci - Fix possible NULL derefrence.
of_match_device could return NULL, and so can cause a NULL
pointer dereference later.
Signed-off-by: Shailendra Verma <shailendra.v@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/davinci')
| -rw-r--r-- | sound/soc/davinci/davinci-evm.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c index 731fb0d86c6a..7a369e0f2093 100644 --- a/sound/soc/davinci/davinci-evm.c +++ b/sound/soc/davinci/davinci-evm.c @@ -358,13 +358,20 @@ static struct snd_soc_card evm_soc_card = { 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); |