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drm/atomic-state-helper: Drop memset from __drm_atomic_helper_bridge_state_init()

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__drm_atomic_helper_bridge_state_init() is always called on a freshly
kzalloc-ed state, so the memset is redundant.

Drop it and document the expectation that the state is already zeroed.

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # imx8mp + sn65dsi84 + bridge hotplug
Link: https://patch.msgid.link/20260619-drm-no-more-bridge-reset-v3-5-ff399263111b@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
This commit is contained in:
Maxime Ripard 2026-06-19 14:24:10 +02:00
parent c8a25a2d85
commit 16710bcb96
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GPG Key ID: 275FCE19A23DBE76
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/drm_atomic_state_helper.c
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@ -891,6 +891,8 @@ EXPORT_SYMBOL(drm_atomic_helper_bridge_destroy_state);
* @state: bridge state to initialize
* @bridge: the bridge this state refers to
*
* @state is assumed to be zeroed.
*
* Initializes the bridge state to default values. This is meant to be called
* by the bridge &drm_bridge_funcs.atomic_reset hook for bridges that subclass
* the bridge state.
@ -898,7 +900,6 @@ EXPORT_SYMBOL(drm_atomic_helper_bridge_destroy_state);
void __drm_atomic_helper_bridge_state_init(struct drm_bridge_state *state,
struct drm_bridge *bridge)
{
memset(state, 0, sizeof(*state));
__drm_atomic_helper_private_obj_create_state(&bridge->base, &state->base);
state->bridge = bridge;
}