[PATCH] coccinelle: api: fix device_attr_show.cocci warnings

[kernel test robot <lkp@intel.com>]

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CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Denis Efremov <efremov@linux.com>
CC: Julia Lawall <Julia.Lawall@lip6.fr>
CC: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
CC: Daniel Vetter <daniel.vetter@ffwll.ch>
CC: Jani Nikula <jani.nikula@intel.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: dri-devel(a)lists.freedesktop.org
CC: linux-fbdev(a)vger.kernel.org
CC: linux-kernel(a)vger.kernel.org

From: kernel test robot <lkp@intel.com>

drivers/video/fbdev/sstfb.c:736:8-16: WARNING: use scnprintf or sprintf


 From Documentation/filesystems/sysfs.txt:
  show() must not use snprintf() when formatting the value to be
  returned to user space. If you can guarantee that an overflow
  will never happen you can use sprintf() otherwise you must use
  scnprintf().

Generated by: scripts/coccinelle/api/device_attr_show.cocci

Fixes: abfc19ff202d ("coccinelle: api: add device_attr_show script")
CC: Denis Efremov <efremov@linux.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   18445bf405cb331117bc98427b1ba6f12418ad17
commit: abfc19ff202d287742483e15fd478ddd6ada2187 coccinelle: api: add device_attr_show script
:::::: branch date: 85 minutes ago
:::::: commit date: 2 weeks ago

Please take the patch only if it's a positive warning. Thanks!

 sstfb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/video/fbdev/sstfb.c
+++ b/drivers/video/fbdev/sstfb.c
@@ -733,7 +733,7 @@ static ssize_t show_vgapass(struct devic
 {
 	struct fb_info *info = dev_get_drvdata(device);
 	struct sstfb_par *par = info->par;
-	return snprintf(buf, PAGE_SIZE, "%d\n", par->vgapass);
+	return scnprintf(buf, PAGE_SIZE, "%d\n", par->vgapass);
 }
 
 static struct device_attribute device_attrs[] = {