From: Axel Lin <axel.lin@ingics.com>
Date: Fri, 9 Sep 2016 10:03:54 +0000 (+0800)
Subject: rtc: ac100: Add NULL checking for devm_kzalloc call
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=473195f80f3940afc8a1461831d74f9a44bba538;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

rtc: ac100: Add NULL checking for devm_kzalloc call

devm_kzalloc can return NULL, add NULL checking to prevent NULL pointer
dereference.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
---

diff --git a/drivers/rtc/rtc-ac100.c b/drivers/rtc/rtc-ac100.c
index 2d0bb02a25d9..9e336184491c 100644
--- a/drivers/rtc/rtc-ac100.c
+++ b/drivers/rtc/rtc-ac100.c
@@ -554,6 +554,9 @@ static int ac100_rtc_probe(struct platform_device *pdev)
 	int ret;
 
 	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
+	if (!chip)
+		return -ENOMEM;
+
 	platform_set_drvdata(pdev, chip);
 	chip->dev = &pdev->dev;
 	chip->regmap = ac100->regmap;