1 files changed, 1 insertions, 1 deletions

diff --git a/net/atm/common.h b/net/atm/common.h
index 92e2981f479f..f48a76b6cdf4 100644
--- a/net/atm/common.h
+++ b/net/atm/common.h
@@ -21,7 +21,7 @@ unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait);
 int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 int vcc_setsockopt(struct socket *sock, int level, int optname,
-                   char __user *optval, int optlen);
+                   char __user *optval, unsigned int optlen);
 int vcc_getsockopt(struct socket *sock, int level, int optname,
                    char __user *optval, int __user *optlen);