pinctrl: samsung: Handle memory allocation failure during wakeup banks init
Check if kmemdup failed during wakeup banks initialization. Otherwise
NULL pointer would be stored under "irq_chip" member of bank and later
dereferenced in interrupt handler.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index 727462c..96068b4 100644
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -479,6 +479,8 @@
if (match) {
irq_chip = kmemdup(match->data,
sizeof(*irq_chip), GFP_KERNEL);
+ if (!irq_chip)
+ return -ENOMEM;
wkup_np = np;
break;
}