[PATCH] net-procfs: Use vsnprintf extension %phN

[Joe Perches]

Save a bit of code by using the kernel extension.

$ size net/core/net-procfs.o*
   text    data     bss     dec     hex filename
   3701     120       0    3821     eed net/core/net-procfs.o.new
   3764     120       0    3884     f2c net/core/net-procfs.o.old

Signed-off-by: Joe Perches <j...@perches.com>
---
 net/core/net-procfs.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
index 14d09345f00d..4847964931df 100644
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -363,15 +363,10 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
 
        netif_addr_lock_bh(dev);
        netdev_for_each_mc_addr(ha, dev) {
-               int i;
-
-               seq_printf(seq, "%-4d %-15s %-5d %-5d ", dev->ifindex,
-                          dev->name, ha->refcount, ha->global_use);
-
-               for (i = 0; i < dev->addr_len; i++)
-                       seq_printf(seq, "%02x", ha->addr[i]);
-
-               seq_putc(seq, '\n');
+               seq_printf(seq, "%-4d %-15s %-5d %-5d %*phN\n",
+                          dev->ifindex, dev->name,
+                          ha->refcount, ha->global_use,
+                          (int)dev->addr_len, ha->addr);
        }
        netif_addr_unlock_bh(dev);
        return 0;
-- 
2.10.0.rc2.1.g053435c