tcp: '< 0' test on unsigned

promote 'cnt' to size_t, to match 'len'.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 25524d4e372a..59f5b5e7c566 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -165,9 +165,10 @@ static int tcpprobe_sprint(char *tbuf, int n)
 static ssize_t tcpprobe_read(struct file *file, char __user *buf,
                              size_t len, loff_t *ppos)
 {
-        int error = 0, cnt = 0;
+        int error = 0;
+        size_t cnt = 0;
 
-        if (!buf || len < 0)
+        if (!buf)
                 return -EINVAL;
 
         while (cnt < len) {