# \[PATCH\] video: udlfb: convert sysfs sprintf/snprintf family to sysfs\_emit

- Subsystems: DISPLAYLINK USB 2.0 FRAMEBUFFER DRIVER (UDLFB), FRAMEBUFFER LAYER, THE REST
- Maintainers: Bernie Thompson, Helge Deller, Linus Torvalds
- List: linux-fbdev
- 1 message, 1 author
- Page: https://ratatoskr.run/linux-fbdev/2021/02/6256534/t

## \[PATCH\] video: udlfb: convert sysfs sprintf/snprintf family to sysfs\_emit

- From: Jiapeng Chong \<hidden\>
- Date: 2021-02-03 03:24:22 
- Message: https://ratatoskr.run/linux-fbdev/2021/02/6256534.md

```text
Fix the following coccicheck warning:

./drivers/video/fbdev/udlfb.c:1452:8-16: WARNING: use scnprintf or
sprintf.

./drivers/video/fbdev/udlfb.c:1444:8-16: WARNING: use scnprintf or
sprintf.

./drivers/video/fbdev/udlfb.c:1436:8-16: WARNING: use scnprintf or
sprintf.

./drivers/video/fbdev/udlfb.c:1428:8-16: WARNING: use scnprintf or
sprintf.

Reported-by: Abaci Robot<redacted>
Signed-off-by: Jiapeng Chong <redacted>
---
 drivers/video/fbdev/udlfb.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index f9b3c1c..d8c086d 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -1425,32 +1425,28 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev,
 				   struct device_attribute *a, char *buf) {
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
-	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dlfb->bytes_rendered));
+	return sysfs_emit(buf, "%u\n", atomic_read(&dlfb->bytes_rendered));
 }
 
 static ssize_t metrics_bytes_identical_show(struct device *fbdev,
 				   struct device_attribute *a, char *buf) {
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
-	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dlfb->bytes_identical));
+	return sysfs_emit(buf, "%u\n", atomic_read(&dlfb->bytes_identical));
 }
 
 static ssize_t metrics_bytes_sent_show(struct device *fbdev,
 				   struct device_attribute *a, char *buf) {
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
-	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dlfb->bytes_sent));
+	return sysfs_emit(buf, "%u\n", atomic_read(&dlfb->bytes_sent));
 }
 
 static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
 				   struct device_attribute *a, char *buf) {
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dlfb = fb_info->par;
-	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dlfb->cpu_kcycles_used));
+	return sysfs_emit(buf, "%u\n", atomic_read(&dlfb->cpu_kcycles_used));
 }
 
 static ssize_t edid_show(
-- 
1.8.3.1

```