In
commit 9f658b7b62e7aefc1ee067136126eca3f58cabfd
Author: Daniel Stone <daniels@xxxxxxxxxxxxx>
Date: Fri May 22 13:34:45 2015 +0100
drm/crtc_helper: Replace open-coded CRTC state helpers
error handling code was broken, resulting in the first path not being
checked correctly. Fix this by using the same pattern as in the
transitional plane helper function drm_plane_helper_update.
v2: Simplify the cleanup code while at it too.
Cc: Daniel Stone <daniels@xxxxxxxxxxxxx>
CC: Sean Paul <seanpaul@xxxxxxxxxxxx>
Cc: John Hunter <zhaojunwang@xxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/drm_crtc_helper.c | 20 ++++++++------------
1 file changed, 8 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 393114df88a3..f36750077c12 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -927,15 +927,13 @@ 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 {
+ else if (crtc->state)
+ crtc_state = drm_atomic_helper_crtc_duplicate_state(crtc);
+ else
crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
- if (!crtc_state)
- return -ENOMEM;
- if (crtc->state)
- __drm_atomic_helper_crtc_duplicate_state(crtc, crtc_state);
- else
- crtc_state->crtc = crtc;
- }
+
+ if (!crtc_state)
+ return -ENOMEM;
crtc_state->planes_changed = true;
crtc_state->mode_changed = true;
@@ -959,10 +957,8 @@ int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mod
out:
if (crtc->funcs->atomic_destroy_state)
crtc->funcs->atomic_destroy_state(crtc, crtc_state);
- else {
- __drm_atomic_helper_crtc_destroy_state(crtc, crtc_state);
- kfree(crtc_state);
- }
+ else
+ drm_atomic_helper_crtc_destroy_state(crtc, crtc_state);
return ret;
}
--
2.1.4
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