diff --git a/bsd-core/drmP.h b/bsd-core/drmP.h
index 99457bf..99c7cc3 100644
--- a/bsd-core/drmP.h
+++ b/bsd-core/drmP.h
@@ -646,7 +646,7 @@ struct drm_driver_info {
 					 int new);
 	int	(*kernel_context_switch_unlock)(struct drm_device *dev);
 	void	(*irq_preinstall)(drm_device_t *dev);
-	void	(*irq_postinstall)(drm_device_t *dev);
+	int	(*irq_postinstall)(drm_device_t *dev);
 	void	(*irq_uninstall)(drm_device_t *dev);
 	void	(*irq_handler)(DRM_IRQ_ARGS);
 	int	(*vblank_wait)(drm_device_t *dev, unsigned int *sequence);