drm/bridge: cdns-dsi: Return an error pointer on allocation failure

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The drm_bridge_funcs.atomic_reset documentation states that the hook
must return either a valid drm_bridge_state object or an ERR_PTR().

The cdns_dsi_bridge_atomic_reset() callback returns NULL when the
allocation of its state fails, violating this contract.

Return ERR_PTR(-ENOMEM) instead.

Fixes: a53d987756 ("drm/bridge: cdns-dsi: Move DSI mode check to _atomic_check()")
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # imx8mp + sn65dsi84 + bridge hotplug
Link: https://patch.msgid.link/20260619-drm-no-more-bridge-reset-v3-1-ff399263111b@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>

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Maxime Ripard 2026-06-19 14:24:06 +02:00

parent a80d12eafa

commit 79ac5c68f1

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drivers/gpu/drm/bridge/cadence/cdns-dsi-core.c

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