linux-kernel - [PATCH] drm/ingenic: remove redundant null check

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Message-Id: <20200930082441.52621-1-vulab@iscas.ac.cn>
Date:   Wed, 30 Sep 2020 08:24:41 +0000
From:   Xu Wang <vulab@...as.ac.cn>
To:     paul@...pouillou.net, airlied@...ux.ie, daniel@...ll.ch
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drm/ingenic: remove redundant null check

Because clk_disable_unprepare already checked NULL clock parameter,
so the additional checks are unnecessary, just remove them.

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

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index b7074161ccf0..9dce02e779ad 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -932,8 +932,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
 	return 0;
 
 err_devclk_disable:
-	if (priv->lcd_clk)
-		clk_disable_unprepare(priv->lcd_clk);
+	clk_disable_unprepare(priv->lcd_clk);
 err_pixclk_disable:
 	clk_disable_unprepare(priv->pix_clk);
 	return ret;
@@ -953,8 +952,7 @@ static void ingenic_drm_unbind(struct device *dev)
 {
 	struct ingenic_drm *priv = dev_get_drvdata(dev);
 
-	if (priv->lcd_clk)
-		clk_disable_unprepare(priv->lcd_clk);
+	clk_disable_unprepare(priv->lcd_clk);
 	clk_disable_unprepare(priv->pix_clk);
 
 	drm_dev_unregister(&priv->drm);
-- 
2.17.1