linux-kernel - [PATCH v2] video: fbdev: sm501fb: convert sysfs snprintf to sysfs

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Date:   Tue, 18 Oct 2022 15:47:45 +0800
From:   Xuezhi Zhang <zhangxuezhi3@...il.com>
To:     deller@....de, zhangxuezhi1@...lpad.com,
        wsa+renesas@...g-engineering.com
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] video: fbdev: sm501fb: convert sysfs snprintf to sysfs_emit

From: Xuezhi Zhang <zhangxuezhi1@...lpad.com>

Follow the advice of the Documentation/filesystems/sysfs.rst
and show() should only use sysfs_emit() or sysfs_emit_at()
when formatting the value to be returned to user space.

Signed-off-by: Xuezhi Zhang <zhangxuezhi1@...lpad.com>
---
v2:change onvert to convert in subject.
---
 drivers/video/fbdev/sm501fb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/sm501fb.c b/drivers/video/fbdev/sm501fb.c
index fce6cfbadfd6..f743bfbde2a6 100644
--- a/drivers/video/fbdev/sm501fb.c
+++ b/drivers/video/fbdev/sm501fb.c
@@ -1166,7 +1166,7 @@ static ssize_t sm501fb_crtsrc_show(struct device *dev,
 	ctrl = smc501_readl(info->regs + SM501_DC_CRT_CONTROL);
 	ctrl &= SM501_DC_CRT_CONTROL_SEL;
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", ctrl ? "crt" : "panel");
+	return sysfs_emit(buf, "%s\n", ctrl ? "crt" : "panel");
 }
 
 /* sm501fb_crtsrc_show
-- 
2.25.1