diff options
| author |   LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-11-11 21:27:35 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2015-11-17 14:39:22 +0100 |
| commit | 853f0cb8603486a8ba17d5b728b52a9b4b029698 (patch) | |
| tree | d8b413dc89ff462275ea840552e0f40683487dbf /drivers/gpio | |
| parent | gpio: 74xx: fix a possible NULL dereference (diff) | |
| download | linux-dev-853f0cb8603486a8ba17d5b728b52a9b4b029698.tar.xz linux-dev-853f0cb8603486a8ba17d5b728b52a9b4b029698.zip | |
gpio: syscon: fix a possible NULL dereference
of_match_device could return NULL, and so cause a NULL pointer
dereference later at line 199:
priv->flags = of_id->data;
Reported-by: coverity (CID 1324140)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-syscon.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-syscon.c b/drivers/gpio/gpio-syscon.c index 045a952576c7..7b25fdf64802 100644 --- a/drivers/gpio/gpio-syscon.c +++ b/drivers/gpio/gpio-syscon.c @@ -187,11 +187,15 @@ MODULE_DEVICE_TABLE(of, syscon_gpio_ids); static int syscon_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - const struct of_device_id *of_id = of_match_device(syscon_gpio_ids, dev); + const struct of_device_id *of_id; struct syscon_gpio_priv *priv; struct device_node *np = dev->of_node; int ret; + of_id = of_match_device(syscon_gpio_ids, dev); + if (!of_id) + return -ENODEV; + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; |