Input: vivaldi - convert to use sysfs_emit_at() API

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 <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/202212071644171074630@zte.com.cn
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/vivaldi-fmap.c b/drivers/input/vivaldi-fmap.c
index 6dae83d..0d29ec0 100644 (file)
--- a/drivers/input/vivaldi-fmap.c
+++ b/drivers/input/vivaldi-fmap.c
@@ -27,10 +27,10 @@ ssize_t vivaldi_function_row_physmap_show(const struct vivaldi_data *data,
                return 0;
 
        for (i = 0; i < data->num_function_row_keys; i++)
-               size += scnprintf(buf + size, PAGE_SIZE - size,
-                                 "%s%02X", size ? " " : "", physmap[i]);
+               size += sysfs_emit_at(buf, size,
+                                     "%s%02X", size ? " " : "", physmap[i]);
        if (size)
-               size += scnprintf(buf + size, PAGE_SIZE - size, "\n");
+               size += sysfs_emit_at(buf, size, "\n");
 
        return size;
 }