[AX.25]: Fix locking of ax25 protocol function list.

Delivery of AX.25 frame to the layer 3 protocols happens in softirq
context so locking needs to be bh-proof.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 9 deletions

diff --git a/net/ax25/ax25_iface.c b/net/ax25/ax25_iface.c
index 77ba07c67682..07ac0207eb69 100644
--- a/net/ax25/ax25_iface.c
+++ b/net/ax25/ax25_iface.c
@@ -66,10 +66,10 @@ int ax25_protocol_register(unsigned int pid,
         protocol->pid  = pid;
         protocol->func = func;
 
-        write_lock(&protocol_list_lock);
+        write_lock_bh(&protocol_list_lock);
         protocol->next = protocol_list;
         protocol_list  = protocol;
-        write_unlock(&protocol_list_lock);
+        write_unlock_bh(&protocol_list_lock);
 
         return 1;
 }
@@ -80,16 +80,16 @@ void ax25_protocol_release(unsigned int pid)
 {
         struct protocol_struct *s, *protocol;
 
-        write_lock(&protocol_list_lock);
+        write_lock_bh(&protocol_list_lock);
         protocol = protocol_list;
         if (protocol == NULL) {
-                write_unlock(&protocol_list_lock);
+                write_unlock_bh(&protocol_list_lock);
                 return;
         }
 
         if (protocol->pid == pid) {
                 protocol_list = protocol->next;
-                write_unlock(&protocol_list_lock);
+                write_unlock_bh(&protocol_list_lock);
                 kfree(protocol);
                 return;
         }
@@ -98,14 +98,14 @@ void ax25_protocol_release(unsigned int pid)
                 if (protocol->next->pid == pid) {
                         s = protocol->next;
                         protocol->next = protocol->next->next;
-                        write_unlock(&protocol_list_lock);
+                        write_unlock_bh(&protocol_list_lock);
                         kfree(s);
                         return;
                 }
 
                 protocol = protocol->next;
         }
-        write_unlock(&protocol_list_lock);
+        write_unlock_bh(&protocol_list_lock);
 }
 
 EXPORT_SYMBOL(ax25_protocol_release);
@@ -266,13 +266,13 @@ int ax25_protocol_is_registered(unsigned int pid)
         struct protocol_struct *protocol;
         int res = 0;
 
-        read_lock(&protocol_list_lock);
+        read_lock_bh(&protocol_list_lock);
         for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
                 if (protocol->pid == pid) {
                         res = 1;
                         break;
                 }
-        read_unlock(&protocol_list_lock);
+        read_unlock_bh(&protocol_list_lock);
 
         return res;
 }