Commit bfb8f5d0 authored by Luca Ceresoli's avatar Luca Ceresoli
Browse files

drm/meson: encoder_dsi: get/put the next bridge 



This driver obtains a bridge pointer from of_drm_find_bridge() in the probe
function and stores it until driver removal. of_drm_find_bridge() is
deprecated. Move to of_drm_find_and_get_bridge() for the bridge to be
refcounted and use bridge->next_bridge to put the reference on
deallocation.

Reviewed-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: default avatarMaxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20251216-drm-bridge-alloc-getput-drm_of_find_bridge-v3-11-b5165fab8058@bootlin.com


Signed-off-by: default avatarLuca Ceresoli <luca.ceresoli@bootlin.com>
parent 47fa48b3

drivers/gpu/drm/meson/meson_encoder_dsi.c

+3 −4
Original line number Diff line number Diff line
@@ -25,7 +25,6 @@ 
struct meson_encoder_dsi {

	struct drm_encoder encoder;

	struct drm_bridge bridge;

	struct drm_bridge *next_bridge;

	struct meson_drm *priv;

};
@@ -38,7 +37,7 @@ static int meson_encoder_dsi_attach(struct drm_bridge *bridge, 
{

	struct meson_encoder_dsi *encoder_dsi = bridge_to_meson_encoder_dsi(bridge);



	return drm_bridge_attach(encoder, encoder_dsi->next_bridge,

	return drm_bridge_attach(encoder, encoder_dsi->bridge.next_bridge,

				 &encoder_dsi->bridge, flags);

}
@@ -120,8 +119,8 @@ int meson_encoder_dsi_probe(struct meson_drm *priv) 
		return 0;

	}



	meson_encoder_dsi->next_bridge = of_drm_find_bridge(remote);

	if (!meson_encoder_dsi->next_bridge)

	meson_encoder_dsi->bridge.next_bridge = of_drm_find_and_get_bridge(remote);

	if (!meson_encoder_dsi->bridge.next_bridge)

		return dev_err_probe(priv->dev, -EPROBE_DEFER,

				     "Failed to find DSI transceiver bridge\n");