package/kernel/mac80211/patches/335-ath9k-use-a-random-MAC-address-if-the-EEPROM-address.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Sat, 18 Oct 2014 18:31:49 +0200
   3 Subject: [PATCH] ath9k: use a random MAC address if the EEPROM address
   4  is invalid
   5
   6 Based on OpenWrt patch by Gabor Juhos
   7
   8 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
   9 ---
  10
  11 --- a/drivers/net/wireless/ath/ath9k/hw.c
  12 +++ b/drivers/net/wireless/ath/ath9k/hw.c
  13 @@ -19,6 +19,7 @@
  14  #include <linux/module.h>
  15  #include <linux/time.h>
  16  #include <linux/bitops.h>
  17 +#include <linux/etherdevice.h>
  18  #include <asm/unaligned.h>
  19
  20  #include "hw.h"
  21 @@ -446,8 +447,16 @@ static int ath9k_hw_init_macaddr(struct
  22                 common->macaddr[2 * i] = eeval >> 8;
  23                 common->macaddr[2 * i + 1] = eeval & 0xff;
  24         }
  25 -       if (sum == 0 || sum == 0xffff * 3)
  26 -               return -EADDRNOTAVAIL;
  27 +       if (!is_valid_ether_addr(common->macaddr)) {
  28 +               ath_err(common,
  29 +                       "eeprom contains invalid mac address: %pM\n",
  30 +                       common->macaddr);
  31 +
  32 +               random_ether_addr(common->macaddr);
  33 +               ath_err(common,
  34 +                       "random mac address will be used: %pM\n",
  35 +                       common->macaddr);
  36 +       }
  37
  38         return 0;
  39  }