From 2e0641631f233b5af09f0bfeaa6220d10cad75e7 Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Fri, 7 Apr 2017 18:48:17 +0200
Subject: [PATCH] drm: Only take cursor locks when the cursor plane exists
I thought I've fixed this, but maybe not. Anyway, clearly broken, and
easy fix.
Cc: Tony Lindgren <tony@atomide.com>
Reported-by: Tony Lindgren <tony@atomide.com>
Fixes: b95ff0319a82 ("drm: Remove drm_modeset_(un)lock_crtc")
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20170407164817.28272-1-daniel.vetter@ffwll.ch
---
drivers/gpu/drm/drm_plane.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_plane.c b/drivers/gpu/drm/drm_plane.c
index 838ca742a28b8..fedd4d60d9cd5 100644
--- a/drivers/gpu/drm/drm_plane.c
+++ b/drivers/gpu/drm/drm_plane.c
@@ -720,15 +720,15 @@ retry:
ret = drm_modeset_lock(&crtc->mutex, &ctx);
if (ret)
goto out;
- ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
- if (ret)
- goto out;
-
/*
* If this crtc has a universal cursor plane, call that plane's update
* handler rather than using legacy cursor handlers.
*/
if (crtc->cursor) {
+ ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
+ if (ret)
+ goto out;
+
ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
goto out;
}
--
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