linux-kernel - [PATCH] drm: panel: tl070wsh30: Add a single error handling block at the end of the function.

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Message-ID: <20210907062349.1879-1-caihuoqing@baidu.com>
Date:   Tue, 7 Sep 2021 14:23:48 +0800
From:   Cai Huoqing <caihuoqing@...du.com>
To:     <caihuoqing@...du.com>
CC:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] drm: panel: tl070wsh30: Add a single error handling block at the end of the function.

A single error handling block at the end of the function could
be brought in to make code a little more concise.

Signed-off-by: Cai Huoqing <caihuoqing@...du.com>
---
 drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c b/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c
index 820731be7147..5e54ef4b3a9c 100644
--- a/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c
+++ b/drivers/gpu/drm/panel/panel-tdo-tl070wsh30.c
@@ -59,8 +59,7 @@ static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
 	err = mipi_dsi_dcs_exit_sleep_mode(tdo_tl070wsh30->link);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
-		regulator_disable(tdo_tl070wsh30->supply);
-		return err;
+		goto err_disable_reg;
 	}
 
 	msleep(200);
@@ -68,8 +67,7 @@ static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
 	err = mipi_dsi_dcs_set_display_on(tdo_tl070wsh30->link);
 	if (err < 0) {
 		dev_err(panel->dev, "failed to set display on: %d\n", err);
-		regulator_disable(tdo_tl070wsh30->supply);
-		return err;
+		goto err_disable_reg;
 	}
 
 	msleep(20);
@@ -77,6 +75,9 @@ static int tdo_tl070wsh30_panel_prepare(struct drm_panel *panel)
 	tdo_tl070wsh30->prepared = true;
 
 	return 0;
+err_disable_reg:
+	regulator_disable(tdo_tl070wsh30->supply);
+	return err;
 }
 
 static int tdo_tl070wsh30_panel_unprepare(struct drm_panel *panel)
-- 
2.25.1