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rt2x00: add support for mac addr from device tree

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On some devices the EEPROMs of Ralink Wi-Fi chips have a default Ralink
MAC address set (RT3062F: 00:0C:43:30:62:00, RT3060F:
00:0C:43:30:60:00). Using multiple of these devices in the same network
can cause nasty issues.

Allow to override the MAC in the EEPROM with (a known good) one set in
the device tree to bypass the issue.

Signed-off-by: Mathias Kresin <dev@kresin.me>
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Mathias Kresin
2016-08-26 09:16:53 +02:00
committed by Kalle Valo
parent b9824cb891
commit 9766cb7090
8 changed files with 24 additions and 24 deletions
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17
drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
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@@ -26,6 +26,8 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/log2.h>
#include <linux/of.h>
#include <linux/of_net.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
@@ -931,6 +933,21 @@ static void rt2x00lib_rate(struct ieee80211_rate *entry,
entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
}
void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr)
{
const char *mac_addr;
mac_addr = of_get_mac_address(rt2x00dev->dev->of_node);
if (mac_addr)
ether_addr_copy(eeprom_mac_addr, mac_addr);
if (!is_valid_ether_addr(eeprom_mac_addr)) {
eth_random_addr(eeprom_mac_addr);
rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", eeprom_mac_addr);
}
}
EXPORT_SYMBOL_GPL(rt2x00lib_set_mac_address);
static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
struct hw_mode_spec *spec)
{