Dear Dan, Thank you for your notice. I have received it. I will be fix it later.

Best wishes

Dan Carpenter dan.carpenter@oracle.com 于2021年12月15日周三 19:32写道：

Hello Kevin Tang,

This is a semi-automatic email about new static checker warnings.

The patch 43531edd53f0: "drm/sprd: add Unisoc's drm kms master" from Dec 7, 2021, leads to the following Smatch complaint:

drivers/gpu/drm/sprd/sprd_drm.c:158 sprd_drm_shutdown()
error: we previously assumed 'drm' could be null (see line 157)

drivers/gpu/drm/sprd/sprd_drm.c 153 static void sprd_drm_shutdown(struct platform_device *pdev) 154 { 155 struct drm_device *drm = platform_get_drvdata(pdev); 156 157 if (!drm) { ^^^^ "drm" is NULL

158 drm_warn(drm, "drm device is not available, no shutdown\n"); ^^^ This dereferences it. drm is set in bind().

159 return; 160 } 161 162 drm_atomic_helper_shutdown(drm); 163 }

regards, dan carpenter