Per filesystems/sysfs.rst, show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space.
coccinelle complains that there are still a couple of functions that use snprintf(). Convert them to sysfs_emit(). > ./drivers/video/fbdev/uvesafb.c:1549:8-16: WARNING: please use sysfs_emit No functional change intended CC: Helge Deller <del...@gmx.de> CC: linux-fb...@vger.kernel.org CC: dri-devel@lists.freedesktop.org Signed-off-by: Li Zhijian <lizhij...@fujitsu.com> --- drivers/video/fbdev/uvesafb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c index e1f421e91b4f..73f00c079a94 100644 --- a/drivers/video/fbdev/uvesafb.c +++ b/drivers/video/fbdev/uvesafb.c @@ -1546,7 +1546,7 @@ static ssize_t uvesafb_show_vbe_ver(struct device *dev, struct fb_info *info = dev_get_drvdata(dev); struct uvesafb_par *par = info->par; - return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version); + return sysfs_emit(buf, "%.4x\n", par->vbe_ib.vbe_version); } static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL); -- 2.29.2