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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2018-03-21 12:20:29 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2018-03-28 09:45:45 +0300
commit23936ba940fbccf08f9f61d7c6d39ba0feb383bc (patch)
treef2dc50adf009e09a2f32469e9e16b1c63442cb34 /drivers/gpu/drm/omapdrm/omap_plane.c
parent75def7785f4901b65a89dc99ea9506b1395242fa (diff)
drm/omap: Use normalized zpos for plane placement
Planes with identical zpos value will result undefined behavior: disappearing planes, screen flickering and it is not supported by the hardware. Use normalized zpos to make sure that we don't encounter invalid configuration. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> CC: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180321102029.15248-7-peter.ujfalusi@ti.com
Diffstat (limited to 'drivers/gpu/drm/omapdrm/omap_plane.c')
-rw-r--r--drivers/gpu/drm/omapdrm/omap_plane.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 2899435cad6e..161233cbc9a0 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -65,7 +65,7 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
info.rotation_type = OMAP_DSS_ROT_NONE;
info.rotation = DRM_MODE_ROTATE_0;
info.global_alpha = 0xff;
- info.zorder = state->zpos;
+ info.zorder = state->normalized_zpos;
/* update scanout: */
omap_framebuffer_update_scanout(state->fb, state, &info);