package/mac80211/patches/701-mwl8k-don-t-overwrite-regulatory-settings.patch

   1 From f340b99171e923eb6b54c1d0c22c15b45df40647 Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jogo@openwrt.org>
   3 Date: Mon, 11 Mar 2013 17:17:28 +0100
   4 Subject: [PATCH] mwl8k: don't overwrite regulatory settings
   5
   6 Currently the caps are parsed on every firmware reload, causing any
   7 channel flags to be cleared.
   8 When there is a firmware to interface mode mismatch, the triggered
   9 firmware reload causes a reset of the regulatory settings, causing all
  10 channels to become available:
  11
  12 root@openrouter:/# iw phy phy0 info
  13 Wiphy phy0
  14         Band 1:
  15                 (...)
  16                 Frequencies:
  17                         * 2412 MHz [1] (0.0 dBm)
  18                         * 2417 MHz [2] (0.0 dBm)
  19                         * 2422 MHz [3] (0.0 dBm)
  20                         * 2427 MHz [4] (0.0 dBm)
  21                         * 2432 MHz [5] (0.0 dBm)
  22                         * 2437 MHz [6] (0.0 dBm)
  23                         * 2442 MHz [7] (0.0 dBm)
  24                         * 2447 MHz [8] (0.0 dBm)
  25                         * 2452 MHz [9] (0.0 dBm)
  26                         * 2457 MHz [10] (0.0 dBm)
  27                         * 2462 MHz [11] (0.0 dBm)
  28                         * 2467 MHz [12] (0.0 dBm)
  29                         * 2472 MHz [13] (0.0 dBm)
  30                         * 2484 MHz [14] (0.0 dBm)
  31                 (...)
  32
  33 To prevent this, only parse the caps on the first firmware load during
  34 hardware probe, and store them locally to know we have already parsed
  35 them.
  36
  37 Signed-off-by: Jonas Gorski <jogo@openwrt.org>
  38 ---
  39  drivers/net/wireless/mwl8k.c |    6 ++++++
  40  1 file changed, 6 insertions(+)
  41
  42 --- a/drivers/net/wireless/mwl8k.c
  43 +++ b/drivers/net/wireless/mwl8k.c
  44 @@ -232,6 +232,7 @@ struct mwl8k_priv {
  45         u16 num_mcaddrs;
  46         u8 hw_rev;
  47         u32 fw_rev;
  48 +       u32 caps;
  49
  50         /*
  51          * Running count of TX packets in flight, to avoid
  52 @@ -2401,6 +2402,9 @@ mwl8k_set_caps(struct ieee80211_hw *hw,
  53  {
  54         struct mwl8k_priv *priv = hw->priv;
  55
  56 +       if (priv->caps)
  57 +               return;
  58 +
  59         if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
  60                 mwl8k_setup_2ghz_band(hw);
  61                 if (caps & MWL8K_CAP_MIMO)
  62 @@ -2412,6 +2416,8 @@ mwl8k_set_caps(struct ieee80211_hw *hw,
  63                 if (caps & MWL8K_CAP_MIMO)
  64                         mwl8k_set_ht_caps(hw, &priv->band_50, caps);
  65         }
  66 +
  67 +       priv->caps = caps;
  68  }
  69
  70  static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)