linux-kernel - [PATCH] fbdev: au1100fb: Add missing check for clk

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Message-Id: <20260128091004.2747011-1-nichen@iscas.ac.cn>
Date: Wed, 28 Jan 2026 17:10:04 +0800
From: Chen Ni <nichen@...as.ac.cn>
To: deller@....de,
	u.kleine-koenig@...libre.com,
	elfring@...rs.sourceforge.net
Cc: linux-fbdev@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Chen Ni <nichen@...as.ac.cn>
Subject: [PATCH] fbdev: au1100fb: Add missing check for clk_enable

Add check for the return value of clk_enable() andreturn the error
if it fails in order to catch the error.

Signed-off-by: Chen Ni <nichen@...as.ac.cn>
---
 drivers/video/fbdev/au1100fb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c
index 6251a6b07b3a..5e7a8f018b7b 100644
--- a/drivers/video/fbdev/au1100fb.c
+++ b/drivers/video/fbdev/au1100fb.c
@@ -567,13 +567,16 @@ int au1100fb_drv_suspend(struct platform_device *dev, pm_message_t state)
 int au1100fb_drv_resume(struct platform_device *dev)
 {
 	struct au1100fb_device *fbdev = platform_get_drvdata(dev);
+	int  ret;
 
 	if (!fbdev)
 		return 0;
 
 	memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs));
 
-	clk_enable(fbdev->lcdclk);
+	ret = clk_enable(fbdev->lcdclk);
+	if (ret)
+		return ret;
 
 	/* Unblank the LCD */
 	au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info);
-- 
2.25.1