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drm/bridge: ite-it66121: 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: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20251216-drm-bridge-alloc-getput-drm_of_find_bridge-v3-7-b5165fab8058@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Luca Ceresoli
2025-12-16 18:58:40 +01:00
parent 3fdeae134b
commit 8f92a5fcbf
1 changed files with 3 additions and 4 deletions
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7
drivers/gpu/drm/bridge/ite-it66121.c
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@@ -298,7 +298,6 @@ struct it66121_chip_info {
struct it66121_ctx {
struct regmap *regmap;
struct drm_bridge bridge;
struct drm_bridge *next_bridge;
struct drm_connector *connector;
struct device *dev;
struct gpio_desc *gpio_reset;
@@ -596,7 +595,7 @@ static int it66121_bridge_attach(struct drm_bridge *bridge,
if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR))
return -EINVAL;
ret = drm_bridge_attach(encoder, ctx->next_bridge, bridge, flags);
ret = drm_bridge_attach(encoder, ctx->bridge.next_bridge, bridge, flags);
if (ret)
return ret;
@@ -1543,9 +1542,9 @@ static int it66121_probe(struct i2c_client *client)
return -EINVAL;
}
ctx->next_bridge = of_drm_find_bridge(ep);
ctx->bridge.next_bridge = of_drm_find_and_get_bridge(ep);
of_node_put(ep);
if (!ctx->next_bridge) {
if (!ctx->bridge.next_bridge) {
dev_dbg(ctx->dev, "Next bridge not found, deferring probe\n");
return -EPROBE_DEFER;
}