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authorLABBE Corentin <clabbe.montjoie@gmail.com>2015-11-11 21:27:35 +0100
committerLinus Walleij <linus.walleij@linaro.org>2015-11-17 14:39:22 +0100
commit853f0cb8603486a8ba17d5b728b52a9b4b029698 (patch)
treed8b413dc89ff462275ea840552e0f40683487dbf /drivers/gpio/gpio-syscon.c
parent56880a243c85668762dfec69b878862f86be6f04 (diff)
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/gpio-syscon.c')
-rw-r--r--drivers/gpio/gpio-syscon.c6
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;