drm: Destroy the planes prior to destroying the associated CRTC

commit 3184009c36da413724f283e3c7ac9cc60c623bc4 upstream.

As during the plane cleanup, we wish to disable the hardware and
so may modify state on the associated CRTC, that CRTC must continue to
exist until we are finished.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=54101
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: lu hua <huax.lu@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 7e479a42af0b636e3728993bd40ae02b7a49db73..4fd363f1656c774252505f412fe3e63332220c33 100644 (file)
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1028,15 +1028,15 @@ void drm_mode_config_cleanup(struct drm_device *dev)
                fb->funcs->destroy(fb);
        }
 
-       list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
-               crtc->funcs->destroy(crtc);
-       }
-
        list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
                                 head) {
                plane->funcs->destroy(plane);
        }
 
+       list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
+               crtc->funcs->destroy(crtc);
+       }
+
        idr_remove_all(&dev->mode_config.crtc_idr);
        idr_destroy(&dev->mode_config.crtc_idr);
 }