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authorAditya Pakki <pakki001@umn.edu>2019-03-12 10:05:52 -0500
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-03-18 12:43:23 +0300
commitd6cb77228e3ae070061195a6fff6ba7c3c0b8e47 (patch)
tree27d0cb8245f91afe0c1a6debce5a41ea3e22c0c3 /drivers/pinctrl/intel
parent9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff)
downloadlinux-d6cb77228e3ae070061195a6fff6ba7c3c0b8e47.tar.gz
pinctrl: baytrail: Fix potential NULL pointer dereference
saved-context in byt_gpio_probe is allocated via devm_kcalloc and is used without checking for NULL in later functions. This patch avoids such a scenario. Signed-off-by: Aditya Pakki <pakki001@umn.edu> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'drivers/pinctrl/intel')
-rw-r--r--drivers/pinctrl/intel/pinctrl-baytrail.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
index 241384ead4ed..18d9ad504194 100644
--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
+++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -1710,6 +1710,8 @@ static int byt_gpio_probe(struct byt_gpio *vg)
#ifdef CONFIG_PM_SLEEP
vg->saved_context = devm_kcalloc(&vg->pdev->dev, gc->ngpio,
sizeof(*vg->saved_context), GFP_KERNEL);
+ if (!vg->saved_context)
+ return -ENOMEM;
#endif
ret = devm_gpiochip_add_data(&vg->pdev->dev, gc, vg);
if (ret) {