linux-kernel - [PATCH] fbdev: gbefb: convert sysfs snprintf to sysfs

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Date:   Tue, 18 Oct 2022 15:51:18 +0800
From:   Xuezhi Zhang <zhangxuezhi3@...il.com>
To:     zhangxuezhi1@...lpad.com, deller@....de, jiasheng@...as.ac.cn
Cc:     linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] fbdev: gbefb: 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>
---
 drivers/video/fbdev/gbefb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/gbefb.c b/drivers/video/fbdev/gbefb.c
index 1582c718329c..000b4aa44241 100644
--- a/drivers/video/fbdev/gbefb.c
+++ b/drivers/video/fbdev/gbefb.c
@@ -1060,14 +1060,14 @@ static const struct fb_ops gbefb_ops = {
 
 static ssize_t gbefb_show_memsize(struct device *dev, struct device_attribute *attr, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%u\n", gbe_mem_size);
+	return sysfs_emit(buf, "%u\n", gbe_mem_size);
 }
 
 static DEVICE_ATTR(size, S_IRUGO, gbefb_show_memsize, NULL);
 
 static ssize_t gbefb_show_rev(struct device *device, struct device_attribute *attr, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", gbe_revision);
+	return sysfs_emit(buf, "%d\n", gbe_revision);
 }
 
 static DEVICE_ATTR(revision, S_IRUGO, gbefb_show_rev, NULL);
-- 
2.25.1