drm/bridge: it6505: Remove a redundant check on existence of bridge->encoder

In it6505_bridge_attach(), the check on the existence of 'bridge->encoder'
is not necessary, as it has already been checked in the drm_bridge_attach()
which happens prior to it6505_bridge_attach() get called. Note that the
it6505_bridge_attach() will only be called by .attach() of the previous
bridge or KMS driver. The previous drm_bridge_attach() will quit with a
negative error code returned if it fails for some reasons. Hence, it is
guaranteed that the .encoder member of the drm_bridge instance is not NULL
when it6505_bridge_attach() function get called.

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

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240513153109.46786-6-sui.jingfeng@linux.dev

diff --git a/drivers/gpu/drm/bridge/ite-it6505.c b/drivers/gpu/drm/bridge/ite-it6505.c
index 3f68c82888c2c51c84b3fe29ec91052703c1fab6..469157341f3ab8ce7f92ccf8747a7c60d1b4f197 100644 (file)
--- a/drivers/gpu/drm/bridge/ite-it6505.c
+++ b/drivers/gpu/drm/bridge/ite-it6505.c
@@ -2882,11 +2882,6 @@ static int it6505_bridge_attach(struct drm_bridge *bridge,
                return -EINVAL;
        }
 
-       if (!bridge->encoder) {
-               dev_err(dev, "Parent encoder object not found");
-               return -ENODEV;
-       }
-
        /* Register aux channel */
        it6505->aux.drm_dev = bridge->dev;