The patch fixes this compiler's warning: fs/squashfs/squashfs.c:115:6: warning: no previous prototype for 'squashfs_set_rootarg' [-Wmissing-prototypes] void squashfs_set_rootarg(struct squashfs_priv *priv, struct fs_device_d *fsdev) ^ Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>