wext: Pull top-level ioctl dispatch logic into helper function.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 20 insertions, 6 deletions

diff --git a/net/wireless/wext.c b/net/wireless/wext.c
index e9c88172ec55..09022cbb58ba 100644
--- a/net/wireless/wext.c
+++ b/net/wireless/wext.c
@@ -1079,8 +1079,10 @@ static int wext_permission_check(unsigned int cmd)
 }
 
 /* entry point from dev ioctl */
-int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd,
-                      void __user *arg)
+static int wext_ioctl_dispatch(struct net *net, struct ifreq *ifr,
+                               unsigned int cmd,
+                               wext_ioctl_func standard,
+                               wext_ioctl_func private)
 {
         int ret = wext_permission_check(cmd);
 
@@ -1089,12 +1091,24 @@ int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd,
 
         dev_load(net, ifr->ifr_name);
         rtnl_lock();
-        ret = wireless_process_ioctl(net, ifr, cmd,
-                                     ioctl_standard_call,
-                                     ioctl_private_call);
+        ret = wireless_process_ioctl(net, ifr, cmd, standard, private);
         rtnl_unlock();
-        if (IW_IS_GET(cmd) && copy_to_user(arg, ifr, sizeof(struct iwreq)))
+
+        return ret;
+}
+
+int wext_handle_ioctl(struct net *net, struct ifreq *ifr, unsigned int cmd,
+                      void __user *arg)
+{
+        int ret = wext_ioctl_dispatch(net, ifr, cmd,
+                                      ioctl_standard_call,
+                                      ioctl_private_call);
+
+        if (ret >= 0 &&
+            IW_IS_GET(cmd) &&
+            copy_to_user(arg, ifr, sizeof(struct iwreq)))
                 return -EFAULT;
+
         return ret;
 }