From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Make sure we don't assign an error pointer to crtc_state->mode_blob
as that will break all kinds of places that assume either NULL or a
valid pointer (eg. drm_property_blob_put()).
Reported-by: fuyufan <fuyufan@xxxxxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic_uapi.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index 9781722519c3..54d62fdb4ef9 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -76,15 +76,17 @@ int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
state->mode_blob = NULL;
if (mode) {
+ struct drm_property_blob *blob;
+
drm_mode_convert_to_umode(&umode, mode);
- state->mode_blob =
- drm_property_create_blob(state->crtc->dev,
- sizeof(umode),
- &umode);
- if (IS_ERR(state->mode_blob))
- return PTR_ERR(state->mode_blob);
+ blob = drm_property_create_blob(crtc->dev,
+ sizeof(umode), &umode);
+ if (IS_ERR(blob))
+ return PTR_ERR(blob);
drm_mode_copy(&state->mode, mode);
+
+ state->mode_blob = blob;
state->enable = true;
drm_dbg_atomic(crtc->dev,
"Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
--
2.34.1
