X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=include%2Fdrm%2Fdrm_device.h;h=c3082a27d5c106690cd0e4b1f8fd941beb129881;hb=ada8b8da0a063722696a944dcbda2e397c8458e9;hp=e21af87a2f3c61a8d69c96ae40d2f9839df99d03;hpb=e7989f973ae1b90ec7c0b671c81f7f553affccbe;p=mirror_ubuntu-bionic-kernel.git

diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h
index e21af87a2f3c..c3082a27d5c1 100644
--- a/include/drm/drm_device.h
+++ b/include/drm/drm_device.h
@@ -146,7 +146,13 @@ struct drm_device {
 	 * races and imprecision over longer time periods, hence exposing a
 	 * hardware vblank counter is always recommended.
 	 *
-	 * If non-zeor, &drm_crtc_funcs.get_vblank_counter must be set.
+	 * This is the statically configured device wide maximum. The driver
+	 * can instead choose to use a runtime configurable per-crtc value
+	 * &drm_vblank_crtc.max_vblank_count, in which case @max_vblank_count
+	 * must be left at zero. See drm_crtc_set_max_vblank_count() on how
+	 * to use the per-crtc value.
+	 *
+	 * If non-zero, &drm_crtc_funcs.get_vblank_counter must be set.
 	 */
 	u32 max_vblank_count;           /**< size of vblank counter register */