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SoC: mxs-saif: check validity of ids in mxs_saif_probe()

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There is a check for validity of one of ids in mxs_saif_probe(),
while array dereferece is made by the other id.

The patch adds the check for the second saif id.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexey Khoroshilov 2016-10-15 00:53:36 +03:00 committed by Mark Brown
parent 1001354ca3
commit e1b790a872
1 changed files with 9 additions and 4 deletions
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13
sound/soc/mxs/mxs-saif.c
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@ -735,6 +735,11 @@ static int mxs_saif_probe(struct platform_device *pdev)
else
saif->id = ret;
if (saif->id >= ARRAY_SIZE(mxs_saif)) {
dev_err(&pdev->dev, "get wrong saif id\n");
return -EINVAL;
}
/*
* If there is no "fsl,saif-master" phandle, it's a saif
* master. Otherwise, it's a slave and its phandle points
@ -749,11 +754,11 @@ static int mxs_saif_probe(struct platform_device *pdev)
return ret;
else
saif->master_id = ret;
}
if (saif->master_id >= ARRAY_SIZE(mxs_saif)) {
dev_err(&pdev->dev, "get wrong master id\n");
return -EINVAL;
if (saif->master_id >= ARRAY_SIZE(mxs_saif)) {
dev_err(&pdev->dev, "get wrong master id\n");
return -EINVAL;
}
}
mxs_saif[saif->id] = saif;