linux-kernel - [PATCH] video: fbdev: au1100fb: Check before some function not needed

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Date:   Wed,  8 Jun 2022 04:43:25 -0700
From:   Yihao Han <hanyihao@...o.com>
To:     Helge Deller <deller@....de>, Yihao Han <hanyihao@...o.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] video: fbdev: au1100fb: Check before some function not needed

clk_disable() already checks the clk ptr using IS_ERR_OR_NULL(clk)
and clk_enable() checks the clk ptr using !clk, so there is no
need to check clk ptr again before calling them.

Signed-off-by: Yihao Han <hanyihao@...o.com>
---
 drivers/video/fbdev/au1100fb.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c
index 52f731a61482..519313b8bb00 100644
--- a/drivers/video/fbdev/au1100fb.c
+++ b/drivers/video/fbdev/au1100fb.c
@@ -560,8 +560,7 @@ int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state)
 	/* Blank the LCD */
 	au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info);
 
-	if (fbdev->lcdclk)
-		clk_disable(fbdev->lcdclk);
+	clk_disable(fbdev->lcdclk);
 
 	memcpy(&fbregs, fbdev->regs, sizeof(struct au1100fb_regs));
 
@@ -577,8 +576,7 @@ int au1100fb_drv_resume(struct platform_device *dev)
 
 	memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs));
 
-	if (fbdev->lcdclk)
-		clk_enable(fbdev->lcdclk);
+	clk_enable(fbdev->lcdclk);
 
 	/* Unblank the LCD */
 	au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info);
-- 
2.17.1