linux-kernel - [PATCH] drm: bridge: adv7511: Remove redundant null check before clk_disable

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Date:   Fri, 27 Nov 2020 09:18:29 +0000
From:   Xu Wang <vulab@...as.ac.cn>
To:     a.hajda@...sung.com, narmstrong@...libre.com,
        Laurent.pinchart@...asonboard.com, jonas@...boo.se,
        jernej.skrabec@...l.net, airlied@...ux.ie, daniel@...ll.ch,
        sam@...nborg.org, bogdan.togorean@...log.com,
        laurentiu.palcu@....com
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm: bridge: adv7511: Remove redundant null check before clk_disable_unprepare

Because clk_disable_unprepare() already checked NULL clock parameter,
so the additional check is unnecessary, just remove them.

Signed-off-by: Xu Wang <vulab@...as.ac.cn>
---
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index a0d392c338da..76555ae64e9c 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -1292,8 +1292,7 @@ static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 
 err_unregister_cec:
 	i2c_unregister_device(adv7511->i2c_cec);
-	if (adv7511->cec_clk)
-		clk_disable_unprepare(adv7511->cec_clk);
+	clk_disable_unprepare(adv7511->cec_clk);
 err_i2c_unregister_packet:
 	i2c_unregister_device(adv7511->i2c_packet);
 err_i2c_unregister_edid:
@@ -1311,8 +1310,7 @@ static int adv7511_remove(struct i2c_client *i2c)
 	if (adv7511->type == ADV7533 || adv7511->type == ADV7535)
 		adv7533_detach_dsi(adv7511);
 	i2c_unregister_device(adv7511->i2c_cec);
-	if (adv7511->cec_clk)
-		clk_disable_unprepare(adv7511->cec_clk);
+	clk_disable_unprepare(adv7511->cec_clk);
 
 	adv7511_uninit_regulators(adv7511);
 
-- 
2.17.1