diff options
Diffstat (limited to 'drivers/gpu/drm/drm_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 5b3e2920c37..f3b98d4b6f4 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -54,6 +54,8 @@ void drm_modeset_lock_all(struct drm_device *dev) mutex_lock(&dev->mode_config.mutex); + mutex_lock(&dev->mode_config.connection_mutex); + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) mutex_lock_nest_lock(&crtc->mutex, &dev->mode_config.mutex); } @@ -72,6 +74,8 @@ void drm_modeset_unlock_all(struct drm_device *dev) list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) mutex_unlock(&crtc->mutex); + mutex_unlock(&dev->mode_config.connection_mutex); + mutex_unlock(&dev->mode_config.mutex); } EXPORT_SYMBOL(drm_modeset_unlock_all); @@ -93,6 +97,7 @@ void drm_warn_on_modeset_not_all_locked(struct drm_device *dev) list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) WARN_ON(!mutex_is_locked(&crtc->mutex)); + WARN_ON(!mutex_is_locked(&dev->mode_config.connection_mutex)); WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); } EXPORT_SYMBOL(drm_warn_on_modeset_not_all_locked); @@ -1793,6 +1798,7 @@ int drm_mode_getconnector(struct drm_device *dev, void *data, DRM_DEBUG_KMS("[CONNECTOR:%d:?]\n", out_resp->connector_id); mutex_lock(&dev->mode_config.mutex); + mutex_lock(&dev->mode_config.connection_mutex); connector = drm_connector_find(dev, out_resp->connector_id); if (!connector) { @@ -1891,6 +1897,7 @@ int drm_mode_getconnector(struct drm_device *dev, void *data, out_resp->count_encoders = encoders_count; out: + mutex_unlock(&dev->mode_config.connection_mutex); mutex_unlock(&dev->mode_config.mutex); return ret; @@ -4640,6 +4647,7 @@ EXPORT_SYMBOL(drm_format_vert_chroma_subsampling); void drm_mode_config_init(struct drm_device *dev) { mutex_init(&dev->mode_config.mutex); + mutex_init(&dev->mode_config.connection_mutex); mutex_init(&dev->mode_config.idr_mutex); mutex_init(&dev->mode_config.fb_lock); INIT_LIST_HEAD(&dev->mode_config.fb_list); |