diff options
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 33d877c65ced..884690c81094 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -538,7 +538,12 @@ EXPORT_SYMBOL(drm_framebuffer_reference); */ void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) { - struct drm_device *dev = fb->dev; + struct drm_device *dev; + + if (!fb) + return; + + dev = fb->dev; mutex_lock(&dev->mode_config.fb_lock); /* Mark fb as reaped and drop idr ref. */ @@ -589,12 +594,17 @@ EXPORT_SYMBOL(drm_framebuffer_cleanup); */ void drm_framebuffer_remove(struct drm_framebuffer *fb) { - struct drm_device *dev = fb->dev; + struct drm_device *dev; struct drm_crtc *crtc; struct drm_plane *plane; struct drm_mode_set set; int ret; + if (!fb) + return; + + dev = fb->dev; + WARN_ON(!list_empty(&fb->filp_head)); /* |