drm: fix blob pointer check
Check properly that the allocated blob's pointer is valid.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Daniel Stone <daniels@collabora.com>
Fixes: 5488dc16fd ("drm: introduce pipe color correction properties")
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1457611461-9116-1-git-send-email-lionel.g.landwerlin@intel.com
			
			
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			| @@ -2924,8 +2924,8 @@ void drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc, | ||||
| 	blob = drm_property_create_blob(dev, | ||||
| 					sizeof(struct drm_color_lut) * size, | ||||
| 					NULL); | ||||
| 	if (!blob) { | ||||
| 		ret = -ENOMEM; | ||||
| 	if (IS_ERR(blob)) { | ||||
| 		ret = PTR_ERR(blob); | ||||
| 		goto fail; | ||||
| 	} | ||||
|  | ||||
|   | ||||
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