* @dev: DRM device
*
* This function cleans up any resources allocated in drm_vblank_init.
+ *
+ * Drivers which don't use drm_irq_install() need to set &drm_device.irq_enabled
+ * themselves, to signal to the DRM core that vblank interrupts are enabled.
*/
void drm_vblank_cleanup(struct drm_device *dev)
{