[ROSE]: Supress sparse warnings

  CHECK   net/rose/af_rose.c
net/rose/af_rose.c:125:11: warning: expensive signed divide
net/rose/af_rose.c:976:46: warning: expensive signed divide
net/rose/af_rose.c:1379:13: warning: context imbalance in 'rose_info_start' - wrong count at exit
net/rose/af_rose.c:1406:13: warning: context imbalance in 'rose_info_stop' - unexpected unlock
  CHECK   net/rose/rose_in.c
net/rose/rose_in.c:185:25: warning: expensive signed divide
  CHECK   net/rose/rose_route.c
net/rose/rose_route.c:997:46: warning: expensive signed divide
net/rose/rose_route.c:1070:13: warning: context imbalance in 'rose_node_start' - wrong count at exit
net/rose/rose_route.c:1093:13: warning: context imbalance in 'rose_node_stop' - unexpected unlock
net/rose/rose_route.c:1146:13: warning: context imbalance in 'rose_neigh_start' - wrong count at exit
net/rose/rose_route.c:1169:13: warning: context imbalance in 'rose_neigh_stop' - unexpected unlock
net/rose/rose_route.c:1229:13: warning: context imbalance in 'rose_route_start' - wrong count at exit
net/rose/rose_route.c:1252:13: warning: context imbalance in 'rose_route_stop' - unexpected unlock

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 2 deletions

diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index 540c0f26ffee..fb9359fb2358 100644
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@@ -994,8 +994,8 @@ int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
                 goto out;
         }
 
-        len  = (((skb->data[3] >> 4) & 0x0F) + 1) / 2;
-        len += (((skb->data[3] >> 0) & 0x0F) + 1) / 2;
+        len  = (((skb->data[3] >> 4) & 0x0F) + 1) >> 1;
+        len += (((skb->data[3] >> 0) & 0x0F) + 1) >> 1;
 
         memset(&facilities, 0x00, sizeof(struct rose_facilities_struct));
 
@@ -1068,6 +1068,7 @@ out:
 #ifdef CONFIG_PROC_FS
 
 static void *rose_node_start(struct seq_file *seq, loff_t *pos)
+        __acquires(rose_neigh_list_lock)
 {
         struct rose_node *rose_node;
         int i = 1;
@@ -1091,6 +1092,7 @@ static void *rose_node_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void rose_node_stop(struct seq_file *seq, void *v)
+        __releases(rose_neigh_list_lock)
 {
         spin_unlock_bh(&rose_neigh_list_lock);
 }
@@ -1144,6 +1146,7 @@ const struct file_operations rose_nodes_fops = {
 };
 
 static void *rose_neigh_start(struct seq_file *seq, loff_t *pos)
+        __acquires(rose_neigh_list_lock)
 {
         struct rose_neigh *rose_neigh;
         int i = 1;
@@ -1167,6 +1170,7 @@ static void *rose_neigh_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void rose_neigh_stop(struct seq_file *seq, void *v)
+        __releases(rose_neigh_list_lock)
 {
         spin_unlock_bh(&rose_neigh_list_lock);
 }
@@ -1227,6 +1231,7 @@ const struct file_operations rose_neigh_fops = {
 
 
 static void *rose_route_start(struct seq_file *seq, loff_t *pos)
+        __acquires(rose_route_list_lock)
 {
         struct rose_route *rose_route;
         int i = 1;
@@ -1250,6 +1255,7 @@ static void *rose_route_next(struct seq_file *seq, void *v, loff_t *pos)
 }
 
 static void rose_route_stop(struct seq_file *seq, void *v)
+        __releases(rose_route_list_lock)
 {
         spin_unlock_bh(&rose_route_list_lock);
 }