[AX25]: Use kmemdup

Code diff stats:

[acme@newtoy net-2.6.20]$ codiff /tmp/ax25.ko.before /tmp/ax25.ko.after
/pub/scm/linux/kernel/git/acme/net-2.6.20/net/ax25/ax25_out.c:
  ax25_send_frame |   -8
 1 function changed, 8 bytes removed

/pub/scm/linux/kernel/git/acme/net-2.6.20/net/ax25/ax25_route.c:
  ax25_rt_autobind |  -15
 1 function changed, 15 bytes removed

/pub/scm/linux/kernel/git/acme/net-2.6.20/net/ax25/af_ax25.c:
  ax25_make_new |  -33
 1 function changed, 33 bytes removed

/pub/scm/linux/kernel/git/acme/net-2.6.20/net/ax25/sysctl_net_ax25.c:
  ax25_register_sysctl |  -21
 1 function changed, 21 bytes removed

/tmp/ax25.ko.after:
 4 functions changed, 77 bytes removed
[acme@newtoy net-2.6.20]$

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c
index 51b7bdaf27eb..8580356ace5c 100644
--- a/net/ax25/ax25_route.c
+++ b/net/ax25/ax25_route.c
@@ -432,11 +432,12 @@ int ax25_rt_autobind(ax25_cb *ax25, ax25_address *addr)
         }
 
         if (ax25_rt->digipeat != NULL) {
-                if ((ax25->digipeat = kmalloc(sizeof(ax25_digi), GFP_ATOMIC)) == NULL) {
+                ax25->digipeat = kmemdup(ax25_rt->digipeat, sizeof(ax25_digi),
+                                         GFP_ATOMIC);
+                if (ax25->digipeat == NULL) {
                         err = -ENOMEM;
                         goto put;
                 }
-                memcpy(ax25->digipeat, ax25_rt->digipeat, sizeof(ax25_digi));
                 ax25_adjust_path(addr, ax25->digipeat);
         }