[ARM] tegra: stingray: Provide random MAC address for wlan [HACK]

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

diff --git a/arch/arm/mach-tegra/board-stingray-wifi.c b/arch/arm/mach-tegra/board-stingray-wifi.c
index e591109d72f4234eac9b89cfc76c36b4c800d059..fb60bb751766dce0ca5671f7fb6f6e08e300bb90 100644 (file)
--- a/arch/arm/mach-tegra/board-stingray-wifi.c
+++ b/arch/arm/mach-tegra/board-stingray-wifi.c
@@ -12,6 +12,9 @@
 #include <linux/wlan_plat.h>
 #include <mach/sdhci.h>
 
+#include <linux/random.h>
+#include <linux/jiffies.h>
+
 #include "board-stingray.h"
 #include "gpio-names.h"
 
@@ -164,11 +167,31 @@ static int stingray_wifi_reset(int on)
        return 0;
 }
 
+static int stingray_wifi_get_mac_addr(unsigned char *buf)
+{
+       static unsigned char mac_addr[6] = { 0, 0x90, 0x4c, 0, 0, 0 };
+       uint rand_mac;
+
+       if (!buf)
+               return -EINVAL;
+
+       if ((mac_addr[4] == 0) && (mac_addr[5] == 0)) {
+               srandom32((uint)jiffies);
+               rand_mac = random32();
+               mac_addr[3] = (unsigned char)rand_mac;
+               mac_addr[4] = (unsigned char)(rand_mac >> 8);
+               mac_addr[5] = (unsigned char)(rand_mac >> 16);
+       }
+       memcpy(buf, mac_addr, 6);
+       return 0;
+}
+
 static struct wifi_platform_data stingray_wifi_control = {
        .set_power      = stingray_wifi_power,
        .set_reset      = stingray_wifi_reset,
        .set_carddetect = stingray_wifi_set_carddetect,
        .mem_prealloc   = stingray_wifi_mem_prealloc,
+       .get_mac_addr   = stingray_wifi_get_mac_addr,
 };
 
 static struct platform_device stingray_wifi_device = {