fbdev: uvesafb: use sysfs_emit() to instead of scnprintf()

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: ye xingchen <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

drivers/video/fbdev/uvesafb.c

···
 	struct uvesafb_par *par = info->par;
 
 	if (par->vbe_ib.oem_vendor_name_ptr)
-		return scnprintf(buf, PAGE_SIZE, "%s\n", (char *)
+		return sysfs_emit(buf, "%s\n", (char *)
 			(&par->vbe_ib) + par->vbe_ib.oem_vendor_name_ptr);
 	else
 		return 0;
···
 	struct uvesafb_par *par = info->par;
 
 	if (par->vbe_ib.oem_product_name_ptr)
-		return scnprintf(buf, PAGE_SIZE, "%s\n", (char *)
+		return sysfs_emit(buf, "%s\n", (char *)
 			(&par->vbe_ib) + par->vbe_ib.oem_product_name_ptr);
 	else
 		return 0;
···
 	struct uvesafb_par *par = info->par;
 
 	if (par->vbe_ib.oem_product_rev_ptr)
-		return scnprintf(buf, PAGE_SIZE, "%s\n", (char *)
+		return sysfs_emit(buf, "%s\n", (char *)
 			(&par->vbe_ib) + par->vbe_ib.oem_product_rev_ptr);
 	else
 		return 0;
···
 	struct uvesafb_par *par = info->par;
 
 	if (par->vbe_ib.oem_string_ptr)
-		return scnprintf(buf, PAGE_SIZE, "%s\n",
+		return sysfs_emit(buf, "%s\n",
 			(char *)(&par->vbe_ib) + par->vbe_ib.oem_string_ptr);
 	else
 		return 0;
···
 	struct fb_info *info = dev_get_drvdata(dev);
 	struct uvesafb_par *par = info->par;
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", par->nocrtc);
+	return sysfs_emit(buf, "%d\n", par->nocrtc);
 }
 
 static ssize_t uvesafb_store_nocrtc(struct device *dev,