From: Ville Syrjälä <ville.syrj...@linux.intel.com>
Any framebuffer that doesn't have proper format information when
drm_framebuffer_init() is called is a bug. Let's warn and return
an error to avoid oopsing the kernel later due to dereferencing the
NULL fb->format pointer.
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Suggested-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/drm_framebuffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_framebuffer.c
b/drivers/gpu/drm/drm_framebuffer.c
index f397565d3c20..892976d974e5 100644
--- a/drivers/gpu/drm/drm_framebuffer.c
+++ b/drivers/gpu/drm/drm_framebuffer.c
@@ -631,7 +631,7 @@ int drm_framebuffer_init(struct drm_device *dev, struct
drm_framebuffer *fb,
{
int ret;
- if (WARN_ON_ONCE(fb->dev != dev))
+ if (WARN_ON_ONCE(fb->dev != dev || !fb->format))
return -EINVAL;
INIT_LIST_HEAD(&fb->filp_head);
--
2.7.4
