From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Fri, 27 Sep 2024 11:17:24 +0000 (+0200)
Subject: gpu: drm: img: fix potential NULL pointer dereference
X-Git-Tag: accepted/tizen/unified/20241221.103410~5
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c7a94656f58eb90d4282ccbed125d0c203845fcf;p=platform%2Fkernel%2Flinux-riscv.git

gpu: drm: img: fix potential NULL pointer dereference

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I40d03860acef21452fa83b00215868bbd1391caa
---

diff --git a/drivers/gpu/drm/img-rogue/module_common.c b/drivers/gpu/drm/img-rogue/module_common.c
index 1f454c91fdb0..0dbee2b4c651 100644
--- a/drivers/gpu/drm/img-rogue/module_common.c
+++ b/drivers/gpu/drm/img-rogue/module_common.c
@@ -169,13 +169,22 @@ CONNECTION_DATA *LinuxSyncConnectionFromFile(struct file *pFile)
 	if (pFile)
 	{
 		struct drm_file *psDRMFile = pFile->private_data;
-		PVRSRV_CONNECTION_PRIV *psConnectionPriv = (PVRSRV_CONNECTION_PRIV*)psDRMFile->driver_priv;
 
+		if (psDRMFile) {
+			PVRSRV_CONNECTION_PRIV *psConnectionPriv = (PVRSRV_CONNECTION_PRIV*)psDRMFile->driver_priv;
+
+			if (psConnectionPriv) {
 #if (PVRSRV_DEVICE_INIT_MODE == PVRSRV_LINUX_DEV_INIT_ON_CONNECT)
-		return (CONNECTION_DATA*)psConnectionPriv->pvConnectionData;
+				return (CONNECTION_DATA*)psConnectionPriv->pvConnectionData;
 #else
-		return (CONNECTION_DATA*)psConnectionPriv->pvSyncConnectionData;
+				return (CONNECTION_DATA*)psConnectionPriv->pvSyncConnectionData;
 #endif
+			} else {
+				return NULL;
+			}
+		} else {
+			return NULL;
+		}
 	}
 
 	return NULL;