From: hwangjae lee <hj-yo.lee@samsung.com>
Date: Wed, 10 Oct 2018 11:43:55 +0000 (+0900)
Subject: [COMMON] fbdev: dpu: Added code to check if variable is NULL
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d86febea13dfb89f118ede60f0c3edb5f104b7de;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] fbdev: dpu: Added code to check if variable is NULL

prevent 232754, 232758.

Change-Id: I36e40c1aeb0eb5cdeada77c7e541b0682833e5aa
Signed-off-by: hwangjae lee <hj-yo.lee@samsung.com>
---

diff --git a/drivers/video/fbdev/exynos/dpu20/dpp_drv.c b/drivers/video/fbdev/exynos/dpu20/dpp_drv.c
index 39061a32c5ce..9d01f0762574 100644
--- a/drivers/video/fbdev/exynos/dpu20/dpp_drv.c
+++ b/drivers/video/fbdev/exynos/dpu20/dpp_drv.c
@@ -510,10 +510,15 @@ err:
 static long dpp_subdev_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
 {
 	struct dpp_device *dpp = v4l2_get_subdevdata(sd);
-	bool reset = (bool)arg;
+	bool reset;
 	int ret = 0;
 	int *afbc_enabled;
 
+	if (arg == NULL)
+		return -1;
+	else
+		reset = (bool)arg;
+
 	switch (cmd) {
 	case DPP_WIN_CONFIG:
 		dpp->dpp_config = (struct dpp_config *)arg;