From 17339233a00577b75235cf07908fefc5f168b751 Mon Sep 17 00:00:00 2001
From: Daniel Stone <daniels@collabora.com>
Date: Sat, 28 Nov 2015 12:09:47 +0000
Subject: [PATCH] compositor-drm: Comment struct members
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Clarify the difference between crtc_id (DRM object) and pipe (index into
drmModeRes->crtcs array, possible_crtcs bitmask).

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
Differential Revision: https://phabricator.freedesktop.org/D1405
---
 libweston/compositor-drm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c
index a8992138f..268117d26 100644
--- a/libweston/compositor-drm.c
+++ b/libweston/compositor-drm.c
@@ -155,8 +155,8 @@ struct drm_output {
 	struct weston_output base;
 	drmModeConnector *connector;
 
-	uint32_t crtc_id;
-	int pipe;
+	uint32_t crtc_id; /* object ID to pass to DRM functions */
+	int pipe; /* index of CRTC in resource array / bitmasks */
 	uint32_t connector_id;
 	drmModeCrtcPtr original_crtc;
 	struct drm_edid edid;