diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index d69e180fc563..5af25ce5bf7c 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -576,6 +576,7 @@ int drm_mode_setcrtc(struct drm_device *dev, void *data, } DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); + mutex_lock(&crtc->dev->mode_config.mutex); drm_modeset_acquire_init(&ctx, 0); retry: ret = drm_modeset_lock_all_ctx(crtc->dev, &ctx); @@ -721,6 +722,7 @@ out: } drm_modeset_drop_locks(&ctx); drm_modeset_acquire_fini(&ctx); + mutex_unlock(&crtc->dev->mode_config.mutex); return ret; } |