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authorAlexey Khoroshilov <khoroshilov@ispras.ru>2016-10-15 00:53:36 +0300
committerMark Brown <broonie@kernel.org>2016-10-26 13:14:32 +0300
commite1b790a8720192e1cfdd46a9b20d0f56de99c73d (patch)
tree0ae7b59665a7f6ac76ec2e5d5619839fccff6782 /sound
parent1001354ca34179f3db924eb66672442a173147dc (diff)
downloadlinux-e1b790a8720192e1cfdd46a9b20d0f56de99c73d.tar.xz
SoC: mxs-saif: check validity of ids in mxs_saif_probe()
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>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/mxs/mxs-saif.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c
index 13631003cb7c..a002ab892772 100644
--- a/sound/soc/mxs/mxs-saif.c
+++ b/sound/soc/mxs/mxs-saif.c
@@ -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;