net: fix returning void-valued expression warnings

drivers/net/8390.c:37:2: warning: returning void-valued expression
drivers/net/bnx2.c:1635:3: warning: returning void-valued expression
drivers/net/xen-netfront.c:1806:2: warning: returning void-valued expression
net/ipv4/tcp_hybla.c:105:3: warning: returning void-valued expression
net/ipv4/tcp_vegas.c:171:3: warning: returning void-valued expression
net/ipv4/tcp_veno.c:123:3: warning: returning void-valued expression
net/sysctl_net.c:85:2: warning: returning void-valued expression

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 13 insertions, 7 deletions

diff --git a/net/ipv4/tcp_hybla.c b/net/ipv4/tcp_hybla.c
index 44618b675916..bfcbd148a89d 100644
--- a/net/ipv4/tcp_hybla.c
+++ b/net/ipv4/tcp_hybla.c
@@ -101,8 +101,10 @@ static void hybla_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
         if (!tcp_is_cwnd_limited(sk, in_flight))
                 return;
 
-        if (!ca->hybla_en)
-                return tcp_reno_cong_avoid(sk, ack, in_flight);
+        if (!ca->hybla_en) {
+                tcp_reno_cong_avoid(sk, ack, in_flight);
+                return;
+        }
 
         if (ca->rho == 0)
                 hybla_recalc_param(sk);
diff --git a/net/ipv4/tcp_vegas.c b/net/ipv4/tcp_vegas.c
index 0e1a8c91f78e..14504dada116 100644
--- a/net/ipv4/tcp_vegas.c
+++ b/net/ipv4/tcp_vegas.c
@@ -167,8 +167,10 @@ static void tcp_vegas_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
         struct tcp_sock *tp = tcp_sk(sk);
         struct vegas *vegas = inet_csk_ca(sk);
 
-        if (!vegas->doing_vegas_now)
-                return tcp_reno_cong_avoid(sk, ack, in_flight);
+        if (!vegas->doing_vegas_now) {
+                tcp_reno_cong_avoid(sk, ack, in_flight);
+                return;
+        }
 
         /* The key players are v_beg_snd_una and v_beg_snd_nxt.
          *
diff --git a/net/ipv4/tcp_veno.c b/net/ipv4/tcp_veno.c
index 2bf618a3b00b..d08b2e855c22 100644
--- a/net/ipv4/tcp_veno.c
+++ b/net/ipv4/tcp_veno.c
@@ -119,8 +119,10 @@ static void tcp_veno_cong_avoid(struct sock *sk, u32 ack, u32 in_flight)
         struct tcp_sock *tp = tcp_sk(sk);
         struct veno *veno = inet_csk_ca(sk);
 
-        if (!veno->doing_veno_now)
-                return tcp_reno_cong_avoid(sk, ack, in_flight);
+        if (!veno->doing_veno_now) {
+                tcp_reno_cong_avoid(sk, ack, in_flight);
+                return;
+        }
 
         /* limited by applications */
         if (!tcp_is_cwnd_limited(sk, in_flight))
diff --git a/net/sysctl_net.c b/net/sysctl_net.c
index 665e856675a4..b4f0525f91af 100644
--- a/net/sysctl_net.c
+++ b/net/sysctl_net.c
@@ -82,6 +82,6 @@ EXPORT_SYMBOL_GPL(register_net_sysctl_table);
 
 void unregister_net_sysctl_table(struct ctl_table_header *header)
 {
-        return unregister_sysctl_table(header);
+        unregister_sysctl_table(header);
 }
 EXPORT_SYMBOL_GPL(unregister_net_sysctl_table);