From: Ville Syrj?l? <ville.syrjala at linux.intel.com>
Cursors and plane can obscure whatever fbdev wants to show the user.
Disable them all in drm_fb_helper_restore_fbdev_mode.
After the cursors and planes have been disabled, user space needs to
explicitly re-enable them to make them visible again.
Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/drm_fb_helper.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 0df0ebb..3d13ca6e2 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -287,13 +287,27 @@ EXPORT_SYMBOL(drm_fb_helper_debug_leave);
*/
bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
{
+ struct drm_device *dev = fb_helper->dev;
+ struct drm_plane *plane;
bool error = false;
- int i, ret;
+ int i;
+
+ drm_warn_on_modeset_not_all_locked(dev);
- drm_warn_on_modeset_not_all_locked(fb_helper->dev);
+ list_for_each_entry(plane, &dev->mode_config.plane_list, head)
+ drm_plane_force_disable(plane);
for (i = 0; i < fb_helper->crtc_count; i++) {
struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
+ struct drm_crtc *crtc = mode_set->crtc;
+ int ret;
+
+ if (crtc->funcs->cursor_set) {
+ ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
+ if (ret)
+ error = true;
+ }
+
ret = drm_mode_set_config_internal(mode_set);
if (ret)
error = true;
--
1.8.1.5
