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

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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: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Maxime 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: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Luca Ceresoli
2025-12-16 18:58:44 +01:00
parent 47fa48b3fa
commit bfb8f5d0a9
1 changed files with 3 additions and 4 deletions
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7
drivers/gpu/drm/meson/meson_encoder_dsi.c
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@@ -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");