rose: Fix signedness issues wrt. digi count.

[ Upstream commit 9828e6e6e3f19efcb476c567b9999891d051f52f ]

Just use explicit casts, since we really can't change the
types of structures exported to userspace which have been
around for 15 years or so.

Reported-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index f132243..103c252 100644 (file)
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -680,7 +680,7 @@ static int rose_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
        if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
                return -EINVAL;
 
-       if (addr->srose_ndigis > ROSE_MAX_DIGIS)
+       if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
                return -EINVAL;
 
        if ((dev = rose_dev_get(&addr->srose_addr)) == NULL) {
@@ -740,7 +740,7 @@ static int rose_connect(struct socket *sock, struct sockaddr *uaddr, int addr_le
        if (addr_len == sizeof(struct sockaddr_rose) && addr->srose_ndigis > 1)
                return -EINVAL;
 
-       if (addr->srose_ndigis > ROSE_MAX_DIGIS)
+       if ((unsigned int) addr->srose_ndigis > ROSE_MAX_DIGIS)
                return -EINVAL;
 
        /* Source + Destination digis should not exceed ROSE_MAX_DIGIS */