linux-kernel - [PATCH] drm/display: dp: delete some dead code

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Message-ID: <de03fbc6-ca8d-4d3d-b80f-d1235b2b346f@stanley.mountain>
Date: Thu, 10 Apr 2025 19:25:14 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Dmitry Baryshkov <lumag@...nel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Jani Nikula <jani.nikula@...el.com>,
	Imre Deak <imre.deak@...el.com>, Lyude Paul <lyude@...hat.com>,
	Ankit Nautiyal <ankit.k.nautiyal@...el.com>,
	Suraj Kandpal <suraj.kandpal@...el.com>,
	Andy Yan <andy.yan@...k-chips.com>,
	Abel Vesa <abel.vesa@...aro.org>, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] drm/display: dp: delete some dead code

We re-worked this code a bit in commit af67978ee37e ("drm/display: dp:
use new DCPD access helpers") but there was a little bit of stray
dead code left over.  Clean it up.

Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/gpu/drm/display/drm_dp_helper.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c
index 57828f2b7b5a..f38b4dc14e1c 100644
--- a/drivers/gpu/drm/display/drm_dp_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_helper.c
@@ -3570,7 +3570,6 @@ EXPORT_SYMBOL(drm_dp_pcon_frl_configure_1);
 int drm_dp_pcon_frl_configure_2(struct drm_dp_aux *aux, int max_frl_mask,
 				u8 frl_type)
 {
-	int ret;
 	u8 buf = max_frl_mask;
 
 	if (frl_type == DP_PCON_FRL_LINK_TRAIN_EXTENDED)
@@ -3579,10 +3578,6 @@ int drm_dp_pcon_frl_configure_2(struct drm_dp_aux *aux, int max_frl_mask,
 		buf &= ~DP_PCON_FRL_LINK_TRAIN_EXTENDED;
 
 	return drm_dp_dpcd_write_byte(aux, DP_PCON_HDMI_LINK_CONFIG_2, buf);
-	if (ret < 0)
-		return ret;
-
-	return 0;
 }
 EXPORT_SYMBOL(drm_dp_pcon_frl_configure_2);
 
@@ -4044,7 +4039,7 @@ int drm_edp_backlight_enable(struct drm_dp_aux *aux, const struct drm_edp_backli
 	if (ret < 0) {
 		drm_dbg_kms(aux->drm_dev, "%s: Failed to write aux backlight mode: %d\n",
 			    aux->name, ret);
-		return ret < 0 ? ret : -EIO;
+		return ret;
 	}
 
 	ret = drm_edp_backlight_set_level(aux, bl, level);
@@ -4192,7 +4187,7 @@ drm_edp_backlight_probe_state(struct drm_dp_aux *aux, struct drm_edp_backlight_i
 	if (ret < 0) {
 		drm_dbg_kms(aux->drm_dev, "%s: Failed to read backlight mode: %d\n",
 			    aux->name, ret);
-		return ret < 0 ? ret : -EIO;
+		return ret;
 	}
 
 	*current_mode = (mode_reg & DP_EDP_BACKLIGHT_CONTROL_MODE_MASK);
-- 
2.47.2