kernel/include/drm/drm_ioctl.h
.. .. @@ -115,6 +115,9 @@ 115 115 * Whether &drm_ioctl_desc.func should be called with the DRM BKL held 116 116 * or not. Enforced as the default for all modern drivers, hence there 117 117 * should never be a need to set this flag. 118 + *119 + * Do not use anywhere else than for the VBLANK_WAIT IOCTL, which is the120 + * only legacy IOCTL which needs this.118 121 */ 119 122 DRM_UNLOCKED = BIT(4), 120 123 /**