[PATCH v1] bridge: Use helpers to handle MAC address

[Andy Shevchenko]

Use
        %pM to print MAC
        mac_pton() to convert it from ASCII to binary format, and
        ether_addr_copy() to copy.

Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
 net/bridge/br_sysfs_br.c | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c
index 723f25eed8ea..b1be0dcfba6b 100644
--- a/net/bridge/br_sysfs_br.c
+++ b/net/bridge/br_sysfs_br.c
@@ -272,10 +272,7 @@ static ssize_t group_addr_show(struct device *d,
                               struct device_attribute *attr, char *buf)
 {
        struct net_bridge *br = to_bridge(d);
-       return sprintf(buf, "%x:%x:%x:%x:%x:%x\n",
-                      br->group_addr[0], br->group_addr[1],
-                      br->group_addr[2], br->group_addr[3],
-                      br->group_addr[4], br->group_addr[5]);
+       return sprintf(buf, "%pM\n", br->group_addr);
 }
 
 static ssize_t group_addr_store(struct device *d,
@@ -284,14 +281,11 @@ static ssize_t group_addr_store(struct device *d,
 {
        struct net_bridge *br = to_bridge(d);
        u8 new_addr[6];
-       int i;
 
        if (!ns_capable(dev_net(br->dev)->user_ns, CAP_NET_ADMIN))
                return -EPERM;
 
-       if (sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
-                  &new_addr[0], &new_addr[1], &new_addr[2],
-                  &new_addr[3], &new_addr[4], &new_addr[5]) != 6)
+       if (!mac_pton(buf, new_addr))
                return -EINVAL;
 
        if (!is_link_local_ether_addr(new_addr))
@@ -306,8 +300,7 @@ static ssize_t group_addr_store(struct device *d,
                return restart_syscall();
 
        spin_lock_bh(&br->lock);
-       for (i = 0; i < 6; i++)
-               br->group_addr[i] = new_addr[i];
+       ether_addr_copy(br->group_addr, new_addr);
        spin_unlock_bh(&br->lock);
 
        br->group_addr_set = true;
-- 
2.15.1