From 28df8cd9e1732fbbf25b89a4a14cbd5b40d2b9ae Mon Sep 17 00:00:00 2001
From: Kevin Tang <kevin3.tang@gmail.com>
Date: Sun, 16 Jan 2022 23:55:47 +0800
Subject: drm/sprd: fix potential NULL dereference
Git-commit: 8668658aebb0a19d877d5a81c004baf716c4aaa6
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
'drm' could be null in sprd_drm_shutdown, and drm_warn maybe dereference
it, remove this warning log.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kevin Tang <kevin3.tang@gmail.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/all/20220117084044.9210-1-kevin3.tang@gmail.com
v1 -> v2:
- Split checking platform_get_resource() return value to a separate patch
- Use dev_warn() instead of removing the warning log
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/sprd/sprd_drm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c
index 286edae95189..a60ecdd67d98 100644
--- a/drivers/gpu/drm/sprd/sprd_drm.c
+++ b/drivers/gpu/drm/sprd/sprd_drm.c
@@ -154,7 +154,7 @@ static void sprd_drm_shutdown(struct platform_device *pdev)
struct drm_device *drm = platform_get_drvdata(pdev);
if (!drm) {
- drm_warn(drm, "drm device is not available, no shutdown\n");
+ dev_warn(&pdev->dev, "drm device is not available, no shutdown\n");
return;
}
--
2.38.1