From e4f31ad2b7138db449310c9b63d402a29dc0e1c9 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 2 Jul 2015 16:33:53 +0200 Subject: [PATCH] drm: reset empty state in transitional helpers Transitional drivers might not have all the state frobbing lined up yet. But since the initial code has been merged a lot more state was added, so we really need this. Cc: Daniel Stone Signed-off-by: Daniel Vetter Reviewed-by: Daniel Stone Reported-and-tested-by: John Hunter Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_crtc_helper.c | 8 +++++--- drivers/gpu/drm/drm_plane_helper.c | 16 ++++++++++------ 2 files changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c index 93104f3555f5..d3dfb0ebbeb2 100644 --- a/drivers/gpu/drm/drm_crtc_helper.c +++ b/drivers/gpu/drm/drm_crtc_helper.c @@ -927,10 +927,12 @@ int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mod if (crtc->funcs->atomic_duplicate_state) crtc_state = crtc->funcs->atomic_duplicate_state(crtc); - else if (crtc->state) + else { + if (!crtc->state) + drm_atomic_helper_crtc_reset(crtc); + crtc_state = drm_atomic_helper_crtc_duplicate_state(crtc); - else - crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); + } if (!crtc_state) return -ENOMEM; diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c index 2f0ed11024eb..b07a213f5655 100644 --- a/drivers/gpu/drm/drm_plane_helper.c +++ b/drivers/gpu/drm/drm_plane_helper.c @@ -525,10 +525,12 @@ int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc, if (plane->funcs->atomic_duplicate_state) plane_state = plane->funcs->atomic_duplicate_state(plane); - else if (plane->state) + else { + if (!plane->state) + drm_atomic_helper_plane_reset(plane); + plane_state = drm_atomic_helper_plane_duplicate_state(plane); - else - plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); + } if (!plane_state) return -ENOMEM; plane_state->plane = plane; @@ -572,10 +574,12 @@ int drm_plane_helper_disable(struct drm_plane *plane) if (plane->funcs->atomic_duplicate_state) plane_state = plane->funcs->atomic_duplicate_state(plane); - else if (plane->state) + else { + if (!plane->state) + drm_atomic_helper_plane_reset(plane); + plane_state = drm_atomic_helper_plane_duplicate_state(plane); - else - plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); + } if (!plane_state) return -ENOMEM; plane_state->plane = plane; -- 2.20.1