[PATCH] fbdev: replace snprintf in show functions with sysfs_emit

Subsystems: framebuffer console, framebuffer core, framebuffer layer, the rest

STALE1728d

2 messages, 2 authors, 2021-11-30 · open the first message on its own page

[PATCH] fbdev: replace snprintf in show functions with sysfs_emit

From: <hidden>
Date: 2021-11-30 00:05:24

From: Yang Guang <redacted>

coccinelle report:
./drivers/video/fbdev/core/fbcon.c:2680:8-16:
WARNING: use scnprintf or sprintf
./drivers/video/fbdev/core/fbcon.c:2655:8-16:
WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <redacted>
Signed-off-by: Yang Guang <redacted>
---
 drivers/video/fbdev/core/fbcon.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 99ecd9a6d844..b4234ec2f047 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2652,7 +2652,7 @@ static ssize_t show_rotate(struct device *device,
 	rotate = fbcon_get_rotate(info);
 err:
 	console_unlock();
-	return snprintf(buf, PAGE_SIZE, "%d\n", rotate);
+	return sysfs_emit(buf, "%d\n", rotate);
 }
 
 static ssize_t show_cursor_blink(struct device *device,
@@ -2677,7 +2677,7 @@ static ssize_t show_cursor_blink(struct device *device,
 	blink = (ops->flags & FBCON_FLAGS_CURSOR_TIMER) ? 1 : 0;
 err:
 	console_unlock();
-	return snprintf(buf, PAGE_SIZE, "%d\n", blink);
+	return sysfs_emit(buf, "%d\n", blink);
 }
 
 static ssize_t store_cursor_blink(struct device *device,
-- 
2.30.2

Re: [PATCH] fbdev: replace snprintf in show functions with sysfs_emit

From: Greg KH <gregkh@linuxfoundation.org>
Date: 2021-11-30 07:08:30

On Tue, Nov 30, 2021 at 08:05:08AM +0800, davidcomponentone@gmail.com wrote:
From: Yang Guang <redacted>

coccinelle report:
./drivers/video/fbdev/core/fbcon.c:2680:8-16:
WARNING: use scnprintf or sprintf
./drivers/video/fbdev/core/fbcon.c:2655:8-16:
WARNING: use scnprintf or sprintf

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Reported-by: Zeal Robot <redacted>
Signed-off-by: Yang Guang <redacted>
As said before, your email does not match these lines, nor was this
reported by this bot, but by the existing tools in the kernel tree.

thanks,

greg k-h
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