package/mac80211/patches/420-mac80211-hw-conf-change-flags.patch

   1 Subject: mac80211: introduce hw config change flags
   2
   3 This makes mac80211 notify the driver which configuration
   4 actually changed, e.g. channel etc.
   5
   6 No driver changes, this is just plumbing, driver authors are
   7 expected to act on this if they want to.
   8
   9 Also remove the HW CONFIG debug printk, it's incorrect, often
  10 we configure something else.
  11
  12 Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
  13 ---
  14  drivers/net/wireless/adm8211.c              |    3 +-
  15  drivers/net/wireless/at76_usb.c             |    3 +-
  16  drivers/net/wireless/ath5k/base.c           |    7 ++----
  17  drivers/net/wireless/ath9k/main.c           |    4 +--
  18  drivers/net/wireless/b43/main.c             |    3 +-
  19  drivers/net/wireless/b43legacy/main.c       |    3 +-
  20  drivers/net/wireless/iwlwifi/iwl-agn.c      |    3 +-
  21  drivers/net/wireless/iwlwifi/iwl3945-base.c |    7 +++---
  22  drivers/net/wireless/libertas_tf/main.c     |    4 ++-
  23  drivers/net/wireless/mac80211_hwsim.c       |    4 +--
  24  drivers/net/wireless/p54/p54common.c        |    3 +-
  25  drivers/net/wireless/rt2x00/rt2x00.h        |    2 -
  26  drivers/net/wireless/rt2x00/rt2x00dev.c     |    2 -
  27  drivers/net/wireless/rt2x00/rt2x00mac.c     |    3 +-
  28  drivers/net/wireless/rtl8180_dev.c          |    3 +-
  29  drivers/net/wireless/rtl8187_dev.c          |    3 +-
  30  drivers/net/wireless/zd1211rw/zd_mac.c      |    4 ++-
  31  include/net/mac80211.h                      |   30 +++++++++++++++++++++++-----
  32  net/mac80211/cfg.c                          |    3 +-
  33  net/mac80211/ieee80211_i.h                  |    2 -
  34  net/mac80211/iface.c                        |   25 +++++++++++++++++------
  35  net/mac80211/main.c                         |   29 ++++++++++++++-------------
  36  net/mac80211/scan.c                         |   12 ++++++++---
  37  net/mac80211/util.c                         |    3 +-
  38  net/mac80211/wext.c                         |   14 ++++++-------
  39  25 files changed, 118 insertions(+), 61 deletions(-)
  40
  41 --- a/include/net/mac80211.h
  42 +++ b/include/net/mac80211.h
  43 @@ -464,12 +464,32 @@ static inline int __deprecated __IEEE802
  44  #define IEEE80211_CONF_SHORT_SLOT_TIME (__IEEE80211_CONF_SHORT_SLOT_TIME())
  45
  46  /**
  47 + * enum ieee80211_conf_changed - denotes which configuration changed
  48 + *
  49 + * @IEEE80211_CONF_CHANGE_RADIO_ENABLED: the value of radio_enabled changed
  50 + * @IEEE80211_CONF_CHANGE_BEACON_INTERVAL: the beacon interval changed
  51 + * @IEEE80211_CONF_CHANGE_LISTEN_INTERVAL: the listen interval changed
  52 + * @IEEE80211_CONF_CHANGE_RADIOTAP: the radiotap flag changed
  53 + * @IEEE80211_CONF_CHANGE_PS: the PS flag changed
  54 + * @IEEE80211_CONF_CHANGE_POWER: the TX power changed
  55 + * @IEEE80211_CONF_CHANGE_CHANNEL: the channel changed
  56 + */
  57 +enum ieee80211_conf_changed {
  58 +       IEEE80211_CONF_CHANGE_RADIO_ENABLED     = BIT(0),
  59 +       IEEE80211_CONF_CHANGE_BEACON_INTERVAL   = BIT(1),
  60 +       IEEE80211_CONF_CHANGE_LISTEN_INTERVAL   = BIT(2),
  61 +       IEEE80211_CONF_CHANGE_RADIOTAP          = BIT(3),
  62 +       IEEE80211_CONF_CHANGE_PS                = BIT(4),
  63 +       IEEE80211_CONF_CHANGE_POWER             = BIT(5),
  64 +       IEEE80211_CONF_CHANGE_CHANNEL           = BIT(6),
  65 +};
  66 +
  67 +/**
  68   * struct ieee80211_conf - configuration of the device
  69   *
  70   * This struct indicates how the driver shall configure the hardware.
  71   *
  72   * @radio_enabled: when zero, driver is required to switch off the radio.
  73 - *     TODO make a flag
  74   * @beacon_int: beacon interval (TODO make interface config)
  75   * @listen_interval: listen interval in units of beacon interval
  76   * @flags: configuration flags defined above
  77 @@ -479,13 +499,13 @@ static inline int __deprecated __IEEE802
  78   * @channel: the channel to tune to
  79   */
  80  struct ieee80211_conf {
  81 -       int radio_enabled;
  82 -
  83         int beacon_int;
  84 -       u16 listen_interval;
  85         u32 flags;
  86         int power_level;
  87
  88 +       u16 listen_interval;
  89 +       bool radio_enabled;
  90 +
  91         struct ieee80211_channel *channel;
  92
  93         struct ieee80211_sta_ht_cap ht_cap;
  94 @@ -1213,7 +1233,7 @@ struct ieee80211_ops {
  95                              struct ieee80211_if_init_conf *conf);
  96         void (*remove_interface)(struct ieee80211_hw *hw,
  97                                  struct ieee80211_if_init_conf *conf);
  98 -       int (*config)(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
  99 +       int (*config)(struct ieee80211_hw *hw, u32 changed);
 100         int (*config_interface)(struct ieee80211_hw *hw,
 101                                 struct ieee80211_vif *vif,
 102                                 struct ieee80211_if_conf *conf);
 103 --- a/net/mac80211/cfg.c
 104 +++ b/net/mac80211/cfg.c
 105 @@ -394,7 +394,8 @@ static int ieee80211_config_beacon(struc
 106          */
 107         if (params->interval) {
 108                 sdata->local->hw.conf.beacon_int = params->interval;
 109 -               ieee80211_hw_config(sdata->local);
 110 +               ieee80211_hw_config(sdata->local,
 111 +                                   IEEE80211_CONF_CHANGE_BEACON_INTERVAL);
 112                 /*
 113                  * We updated some parameter so if below bails out
 114                  * it's not an error.
 115 --- a/net/mac80211/ieee80211_i.h
 116 +++ b/net/mac80211/ieee80211_i.h
 117 @@ -880,7 +880,7 @@ static inline int ieee80211_bssid_match(
 118  }
 119
 120
 121 -int ieee80211_hw_config(struct ieee80211_local *local);
 122 +int ieee80211_hw_config(struct ieee80211_local *local, u32 changed);
 123  int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed);
 124  void ieee80211_tx_set_protected(struct ieee80211_tx_data *tx);
 125  void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 126 --- a/net/mac80211/iface.c
 127 +++ b/net/mac80211/iface.c
 128 @@ -65,7 +65,7 @@ static int ieee80211_open(struct net_dev
 129         struct ieee80211_if_init_conf conf;
 130         u32 changed = 0;
 131         int res;
 132 -       bool need_hw_reconfig = 0;
 133 +       u32 hw_reconf_flags = 0;
 134         u8 null_addr[ETH_ALEN] = {0};
 135
 136         /* fail early if user set an invalid address */
 137 @@ -152,7 +152,8 @@ static int ieee80211_open(struct net_dev
 138                         res = local->ops->start(local_to_hw(local));
 139                 if (res)
 140                         goto err_del_bss;
 141 -               need_hw_reconfig = 1;
 142 +               /* we're brought up, everything changes */
 143 +               hw_reconf_flags = ~0;
 144                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 145         }
 146
 147 @@ -198,8 +199,10 @@ static int ieee80211_open(struct net_dev
 148
 149                 /* must be before the call to ieee80211_configure_filter */
 150                 local->monitors++;
 151 -               if (local->monitors == 1)
 152 +               if (local->monitors == 1) {
 153                         local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
 154 +                       hw_reconf_flags |= IEEE80211_CONF_CHANGE_RADIOTAP;
 155 +               }
 156
 157                 if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
 158                         local->fif_fcsfail++;
 159 @@ -279,8 +282,8 @@ static int ieee80211_open(struct net_dev
 160                 atomic_inc(&local->iff_promiscs);
 161
 162         local->open_count++;
 163 -       if (need_hw_reconfig) {
 164 -               ieee80211_hw_config(local);
 165 +       if (hw_reconf_flags) {
 166 +               ieee80211_hw_config(local, hw_reconf_flags);
 167                 /*
 168                  * set default queue parameters so drivers don't
 169                  * need to initialise the hardware if the hardware
 170 @@ -322,6 +325,7 @@ static int ieee80211_stop(struct net_dev
 171         struct ieee80211_local *local = sdata->local;
 172         struct ieee80211_if_init_conf conf;
 173         struct sta_info *sta;
 174 +       u32 hw_reconf_flags = 0;
 175
 176         /*
 177          * Stop TX on this interface first.
 178 @@ -405,8 +409,10 @@ static int ieee80211_stop(struct net_dev
 179                 }
 180
 181                 local->monitors--;
 182 -               if (local->monitors == 0)
 183 +               if (local->monitors == 0) {
 184                         local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
 185 +                       hw_reconf_flags |= IEEE80211_CONF_CHANGE_RADIOTAP;
 186 +               }
 187
 188                 if (sdata->u.mntr_flags & MONITOR_FLAG_FCSFAIL)
 189                         local->fif_fcsfail--;
 190 @@ -504,8 +510,15 @@ static int ieee80211_stop(struct net_dev
 191
 192                 tasklet_disable(&local->tx_pending_tasklet);
 193                 tasklet_disable(&local->tasklet);
 194 +
 195 +               /* no reconfiguring after stop! */
 196 +               hw_reconf_flags = 0;
 197         }
 198
 199 +       /* do after stop to avoid reconfiguring when we stop anyway */
 200 +       if (hw_reconf_flags)
 201 +               ieee80211_hw_config(local, hw_reconf_flags);
 202 +
 203         return 0;
 204  }
 205
 206 --- a/net/mac80211/main.c
 207 +++ b/net/mac80211/main.c
 208 @@ -197,31 +197,34 @@ int ieee80211_if_config(struct ieee80211
 209                                             &sdata->vif, &conf);
 210  }
 211
 212 -int ieee80211_hw_config(struct ieee80211_local *local)
 213 +int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 214  {
 215         struct ieee80211_channel *chan;
 216         int ret = 0;
 217 +       int power;
 218
 219         if (local->sw_scanning)
 220                 chan = local->scan_channel;
 221         else
 222                 chan = local->oper_channel;
 223
 224 -       local->hw.conf.channel = chan;
 225 +       if (chan != local->hw.conf.channel) {
 226 +               local->hw.conf.channel = chan;
 227 +               changed |= IEEE80211_CONF_CHANGE_CHANNEL;
 228 +       }
 229 +
 230
 231         if (!local->hw.conf.power_level)
 232 -               local->hw.conf.power_level = chan->max_power;
 233 +               power = chan->max_power;
 234         else
 235 -               local->hw.conf.power_level = min(chan->max_power,
 236 -                                              local->hw.conf.power_level);
 237 -
 238 -#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
 239 -       printk(KERN_DEBUG "%s: HW CONFIG: freq=%d\n",
 240 -              wiphy_name(local->hw.wiphy), chan->center_freq);
 241 -#endif
 242 +               power = min(chan->max_power, local->hw.conf.power_level);
 243 +       if (local->hw.conf.power_level != power) {
 244 +               changed |= IEEE80211_CONF_CHANGE_POWER;
 245 +               local->hw.conf.power_level = power;
 246 +       }
 247
 248 -       if (local->open_count) {
 249 -               ret = local->ops->config(local_to_hw(local), &local->hw.conf);
 250 +       if (changed && local->open_count) {
 251 +               ret = local->ops->config(local_to_hw(local), changed);
 252                 /*
 253                  * HW reconfiguration should never fail, the driver has told
 254                  * us what it can support so it should live up to that promise.
 255 @@ -672,7 +675,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(
 256         local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
 257         local->short_retry_limit = 7;
 258         local->long_retry_limit = 4;
 259 -       local->hw.conf.radio_enabled = 1;
 260 +       local->hw.conf.radio_enabled = true;
 261
 262         INIT_LIST_HEAD(&local->interfaces);
 263
 264 --- a/net/mac80211/scan.c
 265 +++ b/net/mac80211/scan.c
 266 @@ -447,12 +447,17 @@ void ieee80211_scan_completed(struct iee
 267
 268         if (local->hw_scanning) {
 269                 local->hw_scanning = false;
 270 -               ieee80211_hw_config(local);
 271 +               /*
 272 +                * Somebody might have requested channel change during scan
 273 +                * that we won't have acted upon, try now. ieee80211_hw_config
 274 +                * will set the flag based on actual changes.
 275 +                */
 276 +               ieee80211_hw_config(local, 0);
 277                 goto done;
 278         }
 279
 280         local->sw_scanning = false;
 281 -       ieee80211_hw_config(local);
 282 +       ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
 283
 284         netif_tx_lock_bh(local->mdev);
 285         netif_addr_lock(local->mdev);
 286 @@ -539,7 +544,8 @@ void ieee80211_scan_work(struct work_str
 287
 288                 if (!skip) {
 289                         local->scan_channel = chan;
 290 -                       if (ieee80211_hw_config(local))
 291 +                       if (ieee80211_hw_config(local,
 292 +                                               IEEE80211_CONF_CHANGE_CHANNEL))
 293                                 skip = 1;
 294                 }
 295
 296 --- a/net/mac80211/util.c
 297 +++ b/net/mac80211/util.c
 298 @@ -645,7 +645,8 @@ int ieee80211_set_freq(struct ieee80211_
 299                 if (local->sw_scanning || local->hw_scanning)
 300                         ret = 0;
 301                 else
 302 -                       ret = ieee80211_hw_config(local);
 303 +                       ret = ieee80211_hw_config(
 304 +                               local, IEEE80211_CONF_CHANGE_CHANNEL);
 305
 306                 rate_control_clear(local);
 307         }
 308 --- a/net/mac80211/wext.c
 309 +++ b/net/mac80211/wext.c
 310 @@ -656,7 +656,7 @@ static int ieee80211_ioctl_siwtxpower(st
 311                                       union iwreq_data *data, char *extra)
 312  {
 313         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 314 -       bool need_reconfig = 0;
 315 +       u32 reconf_flags = 0;
 316         int new_power_level;
 317
 318         if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
 319 @@ -680,17 +680,17 @@ static int ieee80211_ioctl_siwtxpower(st
 320
 321         if (local->hw.conf.power_level != new_power_level) {
 322                 local->hw.conf.power_level = new_power_level;
 323 -               need_reconfig = 1;
 324 +               reconf_flags |= IEEE80211_CONF_CHANGE_POWER;
 325         }
 326
 327         if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) {
 328                 local->hw.conf.radio_enabled = !(data->txpower.disabled);
 329 -               need_reconfig = 1;
 330 +               reconf_flags |= IEEE80211_CONF_CHANGE_RADIO_ENABLED;
 331                 ieee80211_led_radio(local, local->hw.conf.radio_enabled);
 332         }
 333
 334 -       if (need_reconfig)
 335 -               ieee80211_hw_config(local);
 336 +       if (reconf_flags)
 337 +               ieee80211_hw_config(local, reconf_flags);
 338
 339         return 0;
 340  }
 341 @@ -976,7 +976,7 @@ static int ieee80211_ioctl_siwpower(stru
 342
 343         if (wrq->disabled) {
 344                 conf->flags &= ~IEEE80211_CONF_PS;
 345 -               return ieee80211_hw_config(local);
 346 +               return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 347         }
 348
 349         switch (wrq->flags & IW_POWER_MODE) {
 350 @@ -989,7 +989,7 @@ static int ieee80211_ioctl_siwpower(stru
 351                 return -EINVAL;
 352         }
 353
 354 -       return ieee80211_hw_config(local);
 355 +       return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
 356  }
 357
 358  static int ieee80211_ioctl_giwpower(struct net_device *dev,
 359 --- a/drivers/net/wireless/adm8211.c
 360 +++ b/drivers/net/wireless/adm8211.c
 361 @@ -1314,9 +1314,10 @@ static int adm8211_set_ssid(struct ieee8
 362         return 0;
 363  }
 364
 365 -static int adm8211_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 366 +static int adm8211_config(struct ieee80211_hw *dev, u32 changed)
 367  {
 368         struct adm8211_priv *priv = dev->priv;
 369 +       struct ieee80211_conf *conf = &dev->conf;
 370         int channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
 371
 372         if (channel != priv->channel) {
 373 --- a/drivers/net/wireless/at76_usb.c
 374 +++ b/drivers/net/wireless/at76_usb.c
 375 @@ -2057,9 +2057,10 @@ exit:
 376         return 0;
 377  }
 378
 379 -static int at76_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 380 +static int at76_config(struct ieee80211_hw *hw, u32 changed)
 381  {
 382         struct at76_priv *priv = hw->priv;
 383 +       struct ieee80211_conf *conf = &hw->conf;
 384
 385         at76_dbg(DBG_MAC80211, "%s(): channel %d radio %d",
 386                  __func__, conf->channel->hw_value, conf->radio_enabled);
 387 --- a/drivers/net/wireless/ath5k/base.c
 388 +++ b/drivers/net/wireless/ath5k/base.c
 389 @@ -219,8 +219,7 @@ static int ath5k_add_interface(struct ie
 390                 struct ieee80211_if_init_conf *conf);
 391  static void ath5k_remove_interface(struct ieee80211_hw *hw,
 392                 struct ieee80211_if_init_conf *conf);
 393 -static int ath5k_config(struct ieee80211_hw *hw,
 394 -               struct ieee80211_conf *conf);
 395 +static int ath5k_config(struct ieee80211_hw *hw, u32 changed);
 396  static int ath5k_config_interface(struct ieee80211_hw *hw,
 397                 struct ieee80211_vif *vif,
 398                 struct ieee80211_if_conf *conf);
 399 @@ -2767,10 +2766,10 @@ end:
 400   * TODO: Phy disable/diversity etc
 401   */
 402  static int
 403 -ath5k_config(struct ieee80211_hw *hw,
 404 -                       struct ieee80211_conf *conf)
 405 +ath5k_config(struct ieee80211_hw *hw, u32 changed)
 406  {
 407         struct ath5k_softc *sc = hw->priv;
 408 +       struct ieee80211_conf *conf = &hw->conf;
 409
 410         sc->bintval = conf->beacon_int;
 411         sc->power_level = conf->power_level;
 412 --- a/drivers/net/wireless/ath9k/main.c
 413 +++ b/drivers/net/wireless/ath9k/main.c
 414 @@ -1231,11 +1231,11 @@ static void ath9k_remove_interface(struc
 415                         __func__, error);
 416  }
 417
 418 -static int ath9k_config(struct ieee80211_hw *hw,
 419 -                       struct ieee80211_conf *conf)
 420 +static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 421  {
 422         struct ath_softc *sc = hw->priv;
 423         struct ieee80211_channel *curchan = hw->conf.channel;
 424 +       struct ieee80211_conf *conf = &hw->conf;
 425         int pos;
 426
 427         DPRINTF(sc, ATH_DBG_CONFIG, "%s: Set channel: %d MHz\n",
 428 --- a/drivers/net/wireless/b43/main.c
 429 +++ b/drivers/net/wireless/b43/main.c
 430 @@ -3320,11 +3320,12 @@ init_failure:
 431         return err;
 432  }
 433
 434 -static int b43_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 435 +static int b43_op_config(struct ieee80211_hw *hw, u32 changed)
 436  {
 437         struct b43_wl *wl = hw_to_b43_wl(hw);
 438         struct b43_wldev *dev;
 439         struct b43_phy *phy;
 440 +       struct ieee80211_conf *conf = &hw->conf;
 441         unsigned long flags;
 442         int antenna;
 443         int err = 0;
 444 --- a/drivers/net/wireless/b43legacy/main.c
 445 +++ b/drivers/net/wireless/b43legacy/main.c
 446 @@ -2557,11 +2557,12 @@ init_failure:
 447  }
 448
 449  static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
 450 -                                  struct ieee80211_conf *conf)
 451 +                                  u32 changed)
 452  {
 453         struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
 454         struct b43legacy_wldev *dev;
 455         struct b43legacy_phy *phy;
 456 +       struct ieee80211_conf *conf = &hw->conf;
 457         unsigned long flags;
 458         unsigned int new_phymode = 0xFFFF;
 459         int antenna_tx;
 460 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c
 461 +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
 462 @@ -2760,10 +2760,11 @@ static int iwl4965_mac_add_interface(str
 463   * be set inappropriately and the driver currently sets the hardware up to
 464   * use it whenever needed.
 465   */
 466 -static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 467 +static int iwl4965_mac_config(struct ieee80211_hw *hw, u32 changed)
 468  {
 469         struct iwl_priv *priv = hw->priv;
 470         const struct iwl_channel_info *ch_info;
 471 +       struct ieee80211_conf *conf = &hw->conf;
 472         unsigned long flags;
 473         int ret = 0;
 474         u16 channel;
 475 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
 476 +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
 477 @@ -6427,7 +6427,7 @@ static void iwl3945_bg_abort_scan(struct
 478         mutex_unlock(&priv->mutex);
 479  }
 480
 481 -static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
 482 +static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed);
 483
 484  static void iwl3945_bg_scan_completed(struct work_struct *work)
 485  {
 486 @@ -6440,7 +6440,7 @@ static void iwl3945_bg_scan_completed(st
 487                 return;
 488
 489         if (test_bit(STATUS_CONF_PENDING, &priv->status))
 490 -               iwl3945_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
 491 +               iwl3945_mac_config(priv->hw, 0);
 492
 493         ieee80211_scan_completed(priv->hw);
 494
 495 @@ -6629,10 +6629,11 @@ static int iwl3945_mac_add_interface(str
 496   * be set inappropriately and the driver currently sets the hardware up to
 497   * use it whenever needed.
 498   */
 499 -static int iwl3945_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 500 +static int iwl3945_mac_config(struct ieee80211_hw *hw, u32 changed)
 501  {
 502         struct iwl3945_priv *priv = hw->priv;
 503         const struct iwl3945_channel_info *ch_info;
 504 +       struct ieee80211_conf *conf = &hw->conf;
 505         unsigned long flags;
 506         int ret = 0;
 507
 508 --- a/drivers/net/wireless/mac80211_hwsim.c
 509 +++ b/drivers/net/wireless/mac80211_hwsim.c
 510 @@ -361,10 +361,10 @@ static void mac80211_hwsim_beacon(unsign
 511  }
 512
 513
 514 -static int mac80211_hwsim_config(struct ieee80211_hw *hw,
 515 -                                struct ieee80211_conf *conf)
 516 +static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
 517  {
 518         struct mac80211_hwsim_data *data = hw->priv;
 519 +       struct ieee80211_conf *conf = &hw->conf;
 520
 521         printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d beacon_int=%d)\n",
 522                wiphy_name(hw->wiphy), __func__,
 523 --- a/drivers/net/wireless/p54/p54common.c
 524 +++ b/drivers/net/wireless/p54/p54common.c
 525 @@ -1205,10 +1205,11 @@ static void p54_remove_interface(struct
 526         p54_set_filter(dev, 0, NULL);
 527  }
 528
 529 -static int p54_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 530 +static int p54_config(struct ieee80211_hw *dev, u32 changed)
 531  {
 532         int ret;
 533         struct p54_common *priv = dev->priv;
 534 +       struct ieee80211_conf *conf = &dev->conf;
 535
 536         mutex_lock(&priv->conf_mutex);
 537         priv->rx_antenna = 2; /* automatic */
 538 --- a/drivers/net/wireless/rt2x00/rt2x00.h
 539 +++ b/drivers/net/wireless/rt2x00/rt2x00.h
 540 @@ -997,7 +997,7 @@ int rt2x00mac_add_interface(struct ieee8
 541                             struct ieee80211_if_init_conf *conf);
 542  void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
 543                                 struct ieee80211_if_init_conf *conf);
 544 -int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
 545 +int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
 546  int rt2x00mac_config_interface(struct ieee80211_hw *hw,
 547                                struct ieee80211_vif *vif,
 548                                struct ieee80211_if_conf *conf);
 549 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c
 550 +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c
 551 @@ -335,9 +335,10 @@ void rt2x00mac_remove_interface(struct i
 552  }
 553  EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface);
 554
 555 -int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 556 +int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed)
 557  {
 558         struct rt2x00_dev *rt2x00dev = hw->priv;
 559 +       struct ieee80211_conf *conf = &hw->conf;
 560         int radio_on;
 561         int status;
 562
 563 --- a/drivers/net/wireless/rtl8180_dev.c
 564 +++ b/drivers/net/wireless/rtl8180_dev.c
 565 @@ -692,9 +692,10 @@ static void rtl8180_remove_interface(str
 566         priv->vif = NULL;
 567  }
 568
 569 -static int rtl8180_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 570 +static int rtl8180_config(struct ieee80211_hw *dev, u32 changed)
 571  {
 572         struct rtl8180_priv *priv = dev->priv;
 573 +       struct ieee80211_conf *conf = &dev->conf;
 574
 575         priv->rf->set_chan(dev, conf);
 576
 577 --- a/drivers/net/wireless/rtl8187_dev.c
 578 +++ b/drivers/net/wireless/rtl8187_dev.c
 579 @@ -870,9 +870,10 @@ static void rtl8187_remove_interface(str
 580         mutex_unlock(&priv->conf_mutex);
 581  }
 582
 583 -static int rtl8187_config(struct ieee80211_hw *dev, struct ieee80211_conf *conf)
 584 +static int rtl8187_config(struct ieee80211_hw *dev, u32 changed)
 585  {
 586         struct rtl8187_priv *priv = dev->priv;
 587 +       struct ieee80211_conf *conf = &dev->conf;
 588         u32 reg;
 589
 590         mutex_lock(&priv->conf_mutex);
 591 --- a/drivers/net/wireless/zd1211rw/zd_mac.c
 592 +++ b/drivers/net/wireless/zd1211rw/zd_mac.c
 593 @@ -743,9 +743,11 @@ static void zd_op_remove_interface(struc
 594         zd_write_mac_addr(&mac->chip, NULL);
 595  }
 596
 597 -static int zd_op_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
 598 +static int zd_op_config(struct ieee80211_hw *hw, u32 changed)
 599  {
 600         struct zd_mac *mac = zd_hw_mac(hw);
 601 +       struct ieee80211_conf *conf = &hw->conf;
 602 +
 603         return zd_chip_set_channel(&mac->chip, conf->channel->hw_value);
 604  }
 605
 606 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
 607 +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
 608 @@ -1245,7 +1245,7 @@ int rt2x00lib_resume(struct rt2x00_dev *
 609         /*
 610          * Reconfigure device.
 611          */
 612 -       retval = rt2x00mac_config(rt2x00dev->hw, &rt2x00dev->hw->conf);
 613 +       retval = rt2x00mac_config(rt2x00dev->hw, ~0);
 614         if (retval)
 615                 goto exit;
 616