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Message-ID: <20240511150816.326846-1-sui.jingfeng@linux.dev>
Date: Sat, 11 May 2024 23:08:16 +0800
From: Sui Jingfeng <sui.jingfeng@...ux.dev>
To: Liu Ying <victor.liu@....com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Fabio Estevam <festevam@...il.com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>,
Maxime Ripard <mripard@...nel.org>,
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: imx: Remove redundant checks on existence of bridge->encoder
The check on the existence of bridge->encoder on the implementation layer
of drm bridge driver is not necessary, as it has already been done in the
drm_bridge_attach() function. It is guaranteed that the .encoder member
of the drm_bridge instance is not NULL when various imx_xxx_bridge_attach()
function gets called.
Remove the redundant checking codes "if (!bridge->encoder) { ... }".
Signed-off-by: Sui Jingfeng <sui.jingfeng@...ux.dev>
---
drivers/gpu/drm/bridge/imx/imx-ldb-helper.c | 5 -----
drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c | 5 -----
drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c | 5 -----
drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c | 5 -----
4 files changed, 20 deletions(-)
diff --git a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
index 6967325cd8ee..9b5bebbe357d 100644
--- a/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
+++ b/drivers/gpu/drm/bridge/imx/imx-ldb-helper.c
@@ -116,11 +116,6 @@ int ldb_bridge_attach_helper(struct drm_bridge *bridge,
return -EINVAL;
}
- if (!bridge->encoder) {
- DRM_DEV_ERROR(ldb->dev, "missing encoder\n");
- return -ENODEV;
- }
-
return drm_bridge_attach(bridge->encoder,
ldb_ch->next_bridge, bridge,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
index d0868a6ac6c9..e6dbbdc87ce2 100644
--- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
+++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c
@@ -119,11 +119,6 @@ static int imx8qxp_pc_bridge_attach(struct drm_bridge *bridge,
return -EINVAL;
}
- if (!bridge->encoder) {
- DRM_DEV_ERROR(pc->dev, "missing encoder\n");
- return -ENODEV;
- }
-
return drm_bridge_attach(bridge->encoder,
ch->next_bridge, bridge,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
index ed8b7a4e0e11..1d11cc1df43c 100644
--- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
+++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-link.c
@@ -138,11 +138,6 @@ static int imx8qxp_pixel_link_bridge_attach(struct drm_bridge *bridge,
return -EINVAL;
}
- if (!bridge->encoder) {
- DRM_DEV_ERROR(pl->dev, "missing encoder\n");
- return -ENODEV;
- }
-
return drm_bridge_attach(bridge->encoder,
pl->next_bridge, bridge,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
index 4a886cb808ca..fb7cf4369bb8 100644
--- a/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
+++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pxl2dpi.c
@@ -58,11 +58,6 @@ static int imx8qxp_pxl2dpi_bridge_attach(struct drm_bridge *bridge,
return -EINVAL;
}
- if (!bridge->encoder) {
- DRM_DEV_ERROR(p2d->dev, "missing encoder\n");
- return -ENODEV;
- }
-
return drm_bridge_attach(bridge->encoder,
p2d->next_bridge, bridge,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
--
2.43.0
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