package/kernel/mac80211/patches/608-00-rt2x00-get-mac-from-device-tree.patch

   1 From 0e31738ef78a814fcd2a55f2d57a21d322794da1 Mon Sep 17 00:00:00 2001
   2 From: Mathias Kresin <dev@kresin.me>
   3 Date: Fri, 26 Aug 2016 09:16:53 +0200
   4 Subject: rt2x00: add support for mac addr from device tree
   5
   6 On some devices the EEPROMs of Ralink Wi-Fi chips have a default Ralink
   7 MAC address set (RT3062F: 00:0C:43:30:62:00, RT3060F:
   8 00:0C:43:30:60:00). Using multiple of these devices in the same network
   9 can cause nasty issues.
  10
  11 Allow to override the MAC in the EEPROM with (a known good) one set in
  12 the device tree to bypass the issue.
  13
  14 Signed-off-by: Mathias Kresin <dev@kresin.me>
  15 ---
  16  drivers/net/wireless/ralink/rt2x00/rt2400pci.c |  5 +----
  17  drivers/net/wireless/ralink/rt2x00/rt2500pci.c |  5 +----
  18  drivers/net/wireless/ralink/rt2x00/rt2500usb.c |  5 +----
  19  drivers/net/wireless/ralink/rt2x00/rt2800lib.c |  5 +----
  20  drivers/net/wireless/ralink/rt2x00/rt2x00.h    |  1 +
  21  drivers/net/wireless/ralink/rt2x00/rt2x00dev.c | 16 ++++++++++++++++
  22  drivers/net/wireless/ralink/rt2x00/rt61pci.c   |  5 +----
  23  drivers/net/wireless/ralink/rt2x00/rt73usb.c   |  5 +----
  24  8 files changed, 23 insertions(+), 24 deletions(-)
  25
  26 --- a/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
  27 +++ b/drivers/net/wireless/ralink/rt2x00/rt2400pci.c
  28 @@ -1459,10 +1459,7 @@ static int rt2400pci_validate_eeprom(str
  29          * Start validation of the data that has been read.
  30          */
  31         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
  32 -       if (!is_valid_ether_addr(mac)) {
  33 -               eth_random_addr(mac);
  34 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
  35 -       }
  36 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
  37
  38         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
  39         if (word == 0xffff) {
  40 --- a/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
  41 +++ b/drivers/net/wireless/ralink/rt2x00/rt2500pci.c
  42 @@ -1585,10 +1585,7 @@ static int rt2500pci_validate_eeprom(str
  43          * Start validation of the data that has been read.
  44          */
  45         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
  46 -       if (!is_valid_ether_addr(mac)) {
  47 -               eth_random_addr(mac);
  48 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
  49 -       }
  50 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
  51
  52         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
  53         if (word == 0xffff) {
  54 --- a/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
  55 +++ b/drivers/net/wireless/ralink/rt2x00/rt2500usb.c
  56 @@ -1349,10 +1349,7 @@ static int rt2500usb_validate_eeprom(str
  57          * Start validation of the data that has been read.
  58          */
  59         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
  60 -       if (!is_valid_ether_addr(mac)) {
  61 -               eth_random_addr(mac);
  62 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
  63 -       }
  64 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
  65
  66         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
  67         if (word == 0xffff) {
  68 --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  69 +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c
  70 @@ -7531,10 +7531,7 @@ static int rt2800_validate_eeprom(struct
  71          * Start validation of the data that has been read.
  72          */
  73         mac = rt2800_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
  74 -       if (!is_valid_ether_addr(mac)) {
  75 -               eth_random_addr(mac);
  76 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
  77 -       }
  78 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
  79
  80         rt2800_eeprom_read(rt2x00dev, EEPROM_NIC_CONF0, &word);
  81         if (word == 0xffff) {
  82 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  83 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h
  84 @@ -1416,6 +1416,7 @@ static inline void rt2x00debug_dump_fram
  85   */
  86  u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
  87                          struct ieee80211_vif *vif);
  88 +void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr);
  89
  90  /*
  91   * Interrupt context handlers.
  92 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
  93 +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
  94 @@ -26,6 +26,8 @@
  95  #include <linux/module.h>
  96  #include <linux/slab.h>
  97  #include <linux/log2.h>
  98 +#include <linux/of.h>
  99 +#include <linux/of_net.h>
 100
 101  #include "rt2x00.h"
 102  #include "rt2x00lib.h"
 103 @@ -931,6 +933,21 @@ static void rt2x00lib_rate(struct ieee80
 104                 entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
 105  }
 106
 107 +void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr)
 108 +{
 109 +       const char *mac_addr;
 110 +
 111 +       mac_addr = of_get_mac_address(rt2x00dev->dev->of_node);
 112 +       if (mac_addr)
 113 +               ether_addr_copy(eeprom_mac_addr, mac_addr);
 114 +
 115 +       if (!is_valid_ether_addr(eeprom_mac_addr)) {
 116 +               eth_random_addr(eeprom_mac_addr);
 117 +               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", eeprom_mac_addr);
 118 +       }
 119 +}
 120 +EXPORT_SYMBOL_GPL(rt2x00lib_set_mac_address);
 121 +
 122  static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
 123                                     struct hw_mode_spec *spec)
 124  {
 125 --- a/drivers/net/wireless/ralink/rt2x00/rt61pci.c
 126 +++ b/drivers/net/wireless/ralink/rt2x00/rt61pci.c
 127 @@ -2413,10 +2413,7 @@ static int rt61pci_validate_eeprom(struc
 128          * Start validation of the data that has been read.
 129          */
 130         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
 131 -       if (!is_valid_ether_addr(mac)) {
 132 -               eth_random_addr(mac);
 133 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
 134 -       }
 135 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
 136
 137         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
 138         if (word == 0xffff) {
 139 --- a/drivers/net/wireless/ralink/rt2x00/rt73usb.c
 140 +++ b/drivers/net/wireless/ralink/rt2x00/rt73usb.c
 141 @@ -1766,10 +1766,7 @@ static int rt73usb_validate_eeprom(struc
 142          * Start validation of the data that has been read.
 143          */
 144         mac = rt2x00_eeprom_addr(rt2x00dev, EEPROM_MAC_ADDR_0);
 145 -       if (!is_valid_ether_addr(mac)) {
 146 -               eth_random_addr(mac);
 147 -               rt2x00_eeprom_dbg(rt2x00dev, "MAC: %pM\n", mac);
 148 -       }
 149 +       rt2x00lib_set_mac_address(rt2x00dev, mac);
 150
 151         rt2x00_eeprom_read(rt2x00dev, EEPROM_ANTENNA, &word);
 152         if (word == 0xffff) {