linux-kernel - [PATCH] drm/bridge: lt9611uxc: Remove a redundant check on existence of bridge->encoder

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Message-ID: <20240511145549.325852-1-sui.jingfeng@linux.dev>
Date: Sat, 11 May 2024 22:55:49 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Maxime Ripard <mripard@...nel.org>
Cc: Andrzej Hajda <andrzej.hajda@...el.com>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>,
	Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
	Jonas Karlman <jonas@...boo.se>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Sui Jingfeng <sui.jingfeng@...ux.dev>
Subject: [PATCH] drm/bridge: lt9611uxc: Remove a redundant check on existence of bridge->encoder

In the lt9611uxc_connector_init() function, the check on the existence
of bridge->encoder is not necessary, as it has already been done in the
drm_bridge_attach() function. And the check on the drm bridge core
happens before check in the implementation. Hence, it is guaranteed that
the .encoder member of the struct drm_bridge is not NULL when
lt9611uxc_connector_init() function gets called.

Remove the redundant checking codes "if (!bridge->encoder) { ... }".

Signed-off-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
---
 drivers/gpu/drm/bridge/lontium-lt9611uxc.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
index f4f593ad8f79..f1fccfe6c534 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9611uxc.c
@@ -339,11 +339,6 @@ static int lt9611uxc_connector_init(struct drm_bridge *bridge, struct lt9611uxc
 {
 	int ret;
 
-	if (!bridge->encoder) {
-		DRM_ERROR("Parent encoder object not found");
-		return -ENODEV;
-	}
-
 	lt9611uxc->connector.polled = DRM_CONNECTOR_POLL_HPD;
 
 	drm_connector_helper_add(&lt9611uxc->connector,
-- 
2.43.0