err.no Git - linux-2.6/blob - drivers/net/wireless/rt2x00/rt2x00dev.c

   1 /*
   2         Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
   3         <http://rt2x00.serialmonkey.com>
   4
   5         This program is free software; you can redistribute it and/or modify
   6         it under the terms of the GNU General Public License as published by
   7         the Free Software Foundation; either version 2 of the License, or
   8         (at your option) any later version.
   9
  10         This program is distributed in the hope that it will be useful,
  11         but WITHOUT ANY WARRANTY; without even the implied warranty of
  12         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13         GNU General Public License for more details.
  14
  15         You should have received a copy of the GNU General Public License
  16         along with this program; if not, write to the
  17         Free Software Foundation, Inc.,
  18         59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 /*
  22         Module: rt2x00lib
  23         Abstract: rt2x00 generic device routines.
  24  */
  25
  26 #include <linux/kernel.h>
  27 #include <linux/module.h>
  28
  29 #include "rt2x00.h"
  30 #include "rt2x00lib.h"
  31
  32 /*
  33  * Link tuning handlers
  34  */
  35 void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
  36 {
  37         if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
  38                 return;
  39
  40         /*
  41          * Reset link information.
  42          * Both the currently active vgc level as well as
  43          * the link tuner counter should be reset. Resetting
  44          * the counter is important for devices where the
  45          * device should only perform link tuning during the
  46          * first minute after being enabled.
  47          */
  48         rt2x00dev->link.count = 0;
  49         rt2x00dev->link.vgc_level = 0;
  50
  51         /*
  52          * Reset the link tuner.
  53          */
  54         rt2x00dev->ops->lib->reset_tuner(rt2x00dev);
  55 }
  56
  57 static void rt2x00lib_start_link_tuner(struct rt2x00_dev *rt2x00dev)
  58 {
  59         /*
  60          * Clear all (possibly) pre-existing quality statistics.
  61          */
  62         memset(&rt2x00dev->link.qual, 0, sizeof(rt2x00dev->link.qual));
  63
  64         /*
  65          * The RX and TX percentage should start at 50%
  66          * this will assure we will get at least get some
  67          * decent value when the link tuner starts.
  68          * The value will be dropped and overwritten with
  69          * the correct (measured )value anyway during the
  70          * first run of the link tuner.
  71          */
  72         rt2x00dev->link.qual.rx_percentage = 50;
  73         rt2x00dev->link.qual.tx_percentage = 50;
  74
  75         rt2x00lib_reset_link_tuner(rt2x00dev);
  76
  77         queue_delayed_work(rt2x00dev->hw->workqueue,
  78                            &rt2x00dev->link.work, LINK_TUNE_INTERVAL);
  79 }
  80
  81 static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
  82 {
  83         cancel_delayed_work_sync(&rt2x00dev->link.work);
  84 }
  85
  86 /*
  87  * Radio control handlers.
  88  */
  89 int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev)
  90 {
  91         int status;
  92
  93         /*
  94          * Don't enable the radio twice.
  95          * And check if the hardware button has been disabled.
  96          */
  97         if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
  98             test_bit(DEVICE_DISABLED_RADIO_HW, &rt2x00dev->flags))
  99                 return 0;
 100
 101         /*
 102          * Initialize all data queues.
 103          */
 104         rt2x00queue_init_rx(rt2x00dev);
 105         rt2x00queue_init_tx(rt2x00dev);
 106
 107         /*
 108          * Enable radio.
 109          */
 110         status =
 111             rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_ON);
 112         if (status)
 113                 return status;
 114
 115         rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_ON);
 116
 117         rt2x00leds_led_radio(rt2x00dev, true);
 118         rt2x00led_led_activity(rt2x00dev, true);
 119
 120         __set_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags);
 121
 122         /*
 123          * Enable RX.
 124          */
 125         rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON);
 126
 127         /*
 128          * Start the TX queues.
 129          */
 130         ieee80211_wake_queues(rt2x00dev->hw);
 131
 132         return 0;
 133 }
 134
 135 void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev)
 136 {
 137         if (!__test_and_clear_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
 138                 return;
 139
 140         /*
 141          * Stop all scheduled work.
 142          */
 143         if (work_pending(&rt2x00dev->intf_work))
 144                 cancel_work_sync(&rt2x00dev->intf_work);
 145         if (work_pending(&rt2x00dev->filter_work))
 146                 cancel_work_sync(&rt2x00dev->filter_work);
 147
 148         /*
 149          * Stop the TX queues.
 150          */
 151         ieee80211_stop_queues(rt2x00dev->hw);
 152
 153         /*
 154          * Disable RX.
 155          */
 156         rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF);
 157
 158         /*
 159          * Disable radio.
 160          */
 161         rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_OFF);
 162         rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_RADIO_IRQ_OFF);
 163         rt2x00led_led_activity(rt2x00dev, false);
 164         rt2x00leds_led_radio(rt2x00dev, false);
 165 }
 166
 167 void rt2x00lib_toggle_rx(struct rt2x00_dev *rt2x00dev, enum dev_state state)
 168 {
 169         /*
 170          * When we are disabling the RX, we should also stop the link tuner.
 171          */
 172         if (state == STATE_RADIO_RX_OFF)
 173                 rt2x00lib_stop_link_tuner(rt2x00dev);
 174
 175         rt2x00dev->ops->lib->set_device_state(rt2x00dev, state);
 176
 177         /*
 178          * When we are enabling the RX, we should also start the link tuner.
 179          */
 180         if (state == STATE_RADIO_RX_ON &&
 181             (rt2x00dev->intf_ap_count || rt2x00dev->intf_sta_count))
 182                 rt2x00lib_start_link_tuner(rt2x00dev);
 183 }
 184
 185 static void rt2x00lib_evaluate_antenna_sample(struct rt2x00_dev *rt2x00dev)
 186 {
 187         enum antenna rx = rt2x00dev->link.ant.active.rx;
 188         enum antenna tx = rt2x00dev->link.ant.active.tx;
 189         int sample_a =
 190             rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_A);
 191         int sample_b =
 192             rt2x00_get_link_ant_rssi_history(&rt2x00dev->link, ANTENNA_B);
 193
 194         /*
 195          * We are done sampling. Now we should evaluate the results.
 196          */
 197         rt2x00dev->link.ant.flags &= ~ANTENNA_MODE_SAMPLE;
 198
 199         /*
 200          * During the last period we have sampled the RSSI
 201          * from both antenna's. It now is time to determine
 202          * which antenna demonstrated the best performance.
 203          * When we are already on the antenna with the best
 204          * performance, then there really is nothing for us
 205          * left to do.
 206          */
 207         if (sample_a == sample_b)
 208                 return;
 209
 210         if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY)
 211                 rx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
 212
 213         if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
 214                 tx = (sample_a > sample_b) ? ANTENNA_A : ANTENNA_B;
 215
 216         rt2x00lib_config_antenna(rt2x00dev, rx, tx);
 217 }
 218
 219 static void rt2x00lib_evaluate_antenna_eval(struct rt2x00_dev *rt2x00dev)
 220 {
 221         enum antenna rx = rt2x00dev->link.ant.active.rx;
 222         enum antenna tx = rt2x00dev->link.ant.active.tx;
 223         int rssi_curr = rt2x00_get_link_ant_rssi(&rt2x00dev->link);
 224         int rssi_old = rt2x00_update_ant_rssi(&rt2x00dev->link, rssi_curr);
 225
 226         /*
 227          * Legacy driver indicates that we should swap antenna's
 228          * when the difference in RSSI is greater that 5. This
 229          * also should be done when the RSSI was actually better
 230          * then the previous sample.
 231          * When the difference exceeds the threshold we should
 232          * sample the rssi from the other antenna to make a valid
 233          * comparison between the 2 antennas.
 234          */
 235         if (abs(rssi_curr - rssi_old) < 5)
 236                 return;
 237
 238         rt2x00dev->link.ant.flags |= ANTENNA_MODE_SAMPLE;
 239
 240         if (rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY)
 241                 rx = (rx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
 242
 243         if (rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)
 244                 tx = (tx == ANTENNA_A) ? ANTENNA_B : ANTENNA_A;
 245
 246         rt2x00lib_config_antenna(rt2x00dev, rx, tx);
 247 }
 248
 249 static void rt2x00lib_evaluate_antenna(struct rt2x00_dev *rt2x00dev)
 250 {
 251         /*
 252          * Determine if software diversity is enabled for
 253          * either the TX or RX antenna (or both).
 254          * Always perform this check since within the link
 255          * tuner interval the configuration might have changed.
 256          */
 257         rt2x00dev->link.ant.flags &= ~ANTENNA_RX_DIVERSITY;
 258         rt2x00dev->link.ant.flags &= ~ANTENNA_TX_DIVERSITY;
 259
 260         if (rt2x00dev->hw->conf.antenna_sel_rx == 0 &&
 261             rt2x00dev->default_ant.rx == ANTENNA_SW_DIVERSITY)
 262                 rt2x00dev->link.ant.flags |= ANTENNA_RX_DIVERSITY;
 263         if (rt2x00dev->hw->conf.antenna_sel_tx == 0 &&
 264             rt2x00dev->default_ant.tx == ANTENNA_SW_DIVERSITY)
 265                 rt2x00dev->link.ant.flags |= ANTENNA_TX_DIVERSITY;
 266
 267         if (!(rt2x00dev->link.ant.flags & ANTENNA_RX_DIVERSITY) &&
 268             !(rt2x00dev->link.ant.flags & ANTENNA_TX_DIVERSITY)) {
 269                 rt2x00dev->link.ant.flags = 0;
 270                 return;
 271         }
 272
 273         /*
 274          * If we have only sampled the data over the last period
 275          * we should now harvest the data. Otherwise just evaluate
 276          * the data. The latter should only be performed once
 277          * every 2 seconds.
 278          */
 279         if (rt2x00dev->link.ant.flags & ANTENNA_MODE_SAMPLE)
 280                 rt2x00lib_evaluate_antenna_sample(rt2x00dev);
 281         else if (rt2x00dev->link.count & 1)
 282                 rt2x00lib_evaluate_antenna_eval(rt2x00dev);
 283 }
 284
 285 static void rt2x00lib_update_link_stats(struct link *link, int rssi)
 286 {
 287         int avg_rssi = rssi;
 288
 289         /*
 290          * Update global RSSI
 291          */
 292         if (link->qual.avg_rssi)
 293                 avg_rssi = MOVING_AVERAGE(link->qual.avg_rssi, rssi, 8);
 294         link->qual.avg_rssi = avg_rssi;
 295
 296         /*
 297          * Update antenna RSSI
 298          */
 299         if (link->ant.rssi_ant)
 300                 rssi = MOVING_AVERAGE(link->ant.rssi_ant, rssi, 8);
 301         link->ant.rssi_ant = rssi;
 302 }
 303
 304 static void rt2x00lib_precalculate_link_signal(struct link_qual *qual)
 305 {
 306         if (qual->rx_failed || qual->rx_success)
 307                 qual->rx_percentage =
 308                     (qual->rx_success * 100) /
 309                     (qual->rx_failed + qual->rx_success);
 310         else
 311                 qual->rx_percentage = 50;
 312
 313         if (qual->tx_failed || qual->tx_success)
 314                 qual->tx_percentage =
 315                     (qual->tx_success * 100) /
 316                     (qual->tx_failed + qual->tx_success);
 317         else
 318                 qual->tx_percentage = 50;
 319
 320         qual->rx_success = 0;
 321         qual->rx_failed = 0;
 322         qual->tx_success = 0;
 323         qual->tx_failed = 0;
 324 }
 325
 326 static int rt2x00lib_calculate_link_signal(struct rt2x00_dev *rt2x00dev,
 327                                            int rssi)
 328 {
 329         int rssi_percentage = 0;
 330         int signal;
 331
 332         /*
 333          * We need a positive value for the RSSI.
 334          */
 335         if (rssi < 0)
 336                 rssi += rt2x00dev->rssi_offset;
 337
 338         /*
 339          * Calculate the different percentages,
 340          * which will be used for the signal.
 341          */
 342         if (rt2x00dev->rssi_offset)
 343                 rssi_percentage = (rssi * 100) / rt2x00dev->rssi_offset;
 344
 345         /*
 346          * Add the individual percentages and use the WEIGHT
 347          * defines to calculate the current link signal.
 348          */
 349         signal = ((WEIGHT_RSSI * rssi_percentage) +
 350                   (WEIGHT_TX * rt2x00dev->link.qual.tx_percentage) +
 351                   (WEIGHT_RX * rt2x00dev->link.qual.rx_percentage)) / 100;
 352
 353         return (signal > 100) ? 100 : signal;
 354 }
 355
 356 static void rt2x00lib_link_tuner(struct work_struct *work)
 357 {
 358         struct rt2x00_dev *rt2x00dev =
 359             container_of(work, struct rt2x00_dev, link.work.work);
 360
 361         /*
 362          * When the radio is shutting down we should
 363          * immediately cease all link tuning.
 364          */
 365         if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
 366                 return;
 367
 368         /*
 369          * Update statistics.
 370          */
 371         rt2x00dev->ops->lib->link_stats(rt2x00dev, &rt2x00dev->link.qual);
 372         rt2x00dev->low_level_stats.dot11FCSErrorCount +=
 373             rt2x00dev->link.qual.rx_failed;
 374
 375         /*
 376          * Only perform the link tuning when Link tuning
 377          * has been enabled (This could have been disabled from the EEPROM).
 378          */
 379         if (!test_bit(CONFIG_DISABLE_LINK_TUNING, &rt2x00dev->flags))
 380                 rt2x00dev->ops->lib->link_tuner(rt2x00dev);
 381
 382         /*
 383          * Precalculate a portion of the link signal which is
 384          * in based on the tx/rx success/failure counters.
 385          */
 386         rt2x00lib_precalculate_link_signal(&rt2x00dev->link.qual);
 387
 388         /*
 389          * Send a signal to the led to update the led signal strength.
 390          */
 391         rt2x00leds_led_quality(rt2x00dev, rt2x00dev->link.qual.avg_rssi);
 392
 393         /*
 394          * Evaluate antenna setup, make this the last step since this could
 395          * possibly reset some statistics.
 396          */
 397         rt2x00lib_evaluate_antenna(rt2x00dev);
 398
 399         /*
 400          * Increase tuner counter, and reschedule the next link tuner run.
 401          */
 402         rt2x00dev->link.count++;
 403         queue_delayed_work(rt2x00dev->hw->workqueue, &rt2x00dev->link.work,
 404                            LINK_TUNE_INTERVAL);
 405 }
 406
 407 static void rt2x00lib_packetfilter_scheduled(struct work_struct *work)
 408 {
 409         struct rt2x00_dev *rt2x00dev =
 410             container_of(work, struct rt2x00_dev, filter_work);
 411
 412         rt2x00dev->ops->lib->config_filter(rt2x00dev, rt2x00dev->packet_filter);
 413 }
 414
 415 static void rt2x00lib_intf_scheduled_iter(void *data, u8 *mac,
 416                                           struct ieee80211_vif *vif)
 417 {
 418         struct rt2x00_dev *rt2x00dev = data;
 419         struct rt2x00_intf *intf = vif_to_intf(vif);
 420         struct sk_buff *skb;
 421         struct ieee80211_bss_conf conf;
 422         int delayed_flags;
 423
 424         /*
 425          * Copy all data we need during this action under the protection
 426          * of a spinlock. Otherwise race conditions might occur which results
 427          * into an invalid configuration.
 428          */
 429         spin_lock(&intf->lock);
 430
 431         memcpy(&conf, &intf->conf, sizeof(conf));
 432         delayed_flags = intf->delayed_flags;
 433         intf->delayed_flags = 0;
 434
 435         spin_unlock(&intf->lock);
 436
 437         if (delayed_flags & DELAYED_UPDATE_BEACON) {
 438                 skb = ieee80211_beacon_get(rt2x00dev->hw, vif);
 439                 if (skb &&
 440                     rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, skb))
 441                         dev_kfree_skb(skb);
 442         }
 443
 444         if (delayed_flags & DELAYED_CONFIG_ERP)
 445                 rt2x00lib_config_erp(rt2x00dev, intf, &intf->conf);
 446
 447         if (delayed_flags & DELAYED_LED_ASSOC)
 448                 rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated);
 449 }
 450
 451 static void rt2x00lib_intf_scheduled(struct work_struct *work)
 452 {
 453         struct rt2x00_dev *rt2x00dev =
 454             container_of(work, struct rt2x00_dev, intf_work);
 455
 456         /*
 457          * Iterate over each interface and perform the
 458          * requested configurations.
 459          */
 460         ieee80211_iterate_active_interfaces(rt2x00dev->hw,
 461                                             rt2x00lib_intf_scheduled_iter,
 462                                             rt2x00dev);
 463 }
 464
 465 /*
 466  * Interrupt context handlers.
 467  */
 468 static void rt2x00lib_beacondone_iter(void *data, u8 *mac,
 469                                       struct ieee80211_vif *vif)
 470 {
 471         struct rt2x00_dev *rt2x00dev = data;
 472         struct rt2x00_intf *intf = vif_to_intf(vif);
 473
 474         if (vif->type != IEEE80211_IF_TYPE_AP &&
 475             vif->type != IEEE80211_IF_TYPE_IBSS)
 476                 return;
 477
 478         /*
 479          * Clean up the beacon skb.
 480          */
 481         rt2x00queue_free_skb(rt2x00dev, intf->beacon->skb);
 482         intf->beacon->skb = NULL;
 483
 484         spin_lock(&intf->lock);
 485         intf->delayed_flags |= DELAYED_UPDATE_BEACON;
 486         spin_unlock(&intf->lock);
 487 }
 488
 489 void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev)
 490 {
 491         if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
 492                 return;
 493
 494         ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw,
 495                                                    rt2x00lib_beacondone_iter,
 496                                                    rt2x00dev);
 497
 498         queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work);
 499 }
 500 EXPORT_SYMBOL_GPL(rt2x00lib_beacondone);
 501
 502 void rt2x00lib_txdone(struct queue_entry *entry,
 503                       struct txdone_entry_desc *txdesc)
 504 {
 505         struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
 506         struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
 507         enum data_queue_qid qid = skb_get_queue_mapping(entry->skb);
 508
 509         /*
 510          * Unmap the skb.
 511          */
 512         rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
 513
 514         /*
 515          * Send frame to debugfs immediately, after this call is completed
 516          * we are going to overwrite the skb->cb array.
 517          */
 518         rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_TXDONE, entry->skb);
 519
 520         /*
 521          * Update TX statistics.
 522          */
 523         rt2x00dev->link.qual.tx_success +=
 524             test_bit(TXDONE_SUCCESS, &txdesc->flags);
 525         rt2x00dev->link.qual.tx_failed +=
 526             test_bit(TXDONE_FAILURE, &txdesc->flags);
 527
 528         /*
 529          * Initialize TX status
 530          */
 531         memset(&tx_info->status, 0, sizeof(tx_info->status));
 532         tx_info->status.ack_signal = 0;
 533         tx_info->status.excessive_retries =
 534             test_bit(TXDONE_EXCESSIVE_RETRY, &txdesc->flags);
 535         tx_info->status.retry_count = txdesc->retry;
 536
 537         if (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK)) {
 538                 if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
 539                         tx_info->flags |= IEEE80211_TX_STAT_ACK;
 540                 else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
 541                         rt2x00dev->low_level_stats.dot11ACKFailureCount++;
 542         }
 543
 544         if (tx_info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) {
 545                 if (test_bit(TXDONE_SUCCESS, &txdesc->flags))
 546                         rt2x00dev->low_level_stats.dot11RTSSuccessCount++;
 547                 else if (test_bit(TXDONE_FAILURE, &txdesc->flags))
 548                         rt2x00dev->low_level_stats.dot11RTSFailureCount++;
 549         }
 550
 551         /*
 552          * Only send the status report to mac80211 when TX status was
 553          * requested by it. If this was a extra frame coming through
 554          * a mac80211 library call (RTS/CTS) then we should not send the
 555          * status report back.
 556          */
 557         if (tx_info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
 558                 ieee80211_tx_status_irqsafe(rt2x00dev->hw, entry->skb);
 559         else
 560                 dev_kfree_skb_irq(entry->skb);
 561
 562         /*
 563          * Make this entry available for reuse.
 564          */
 565         entry->skb = NULL;
 566         entry->flags = 0;
 567
 568         rt2x00dev->ops->lib->init_txentry(rt2x00dev, entry);
 569
 570         __clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
 571         rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
 572
 573         /*
 574          * If the data queue was below the threshold before the txdone
 575          * handler we must make sure the packet queue in the mac80211 stack
 576          * is reenabled when the txdone handler has finished.
 577          */
 578         if (!rt2x00queue_threshold(entry->queue))
 579                 ieee80211_wake_queue(rt2x00dev->hw, qid);
 580 }
 581 EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
 582
 583 void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
 584                       struct queue_entry *entry)
 585 {
 586         struct rxdone_entry_desc rxdesc;
 587         struct sk_buff *skb;
 588         struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
 589         struct ieee80211_supported_band *sband;
 590         struct ieee80211_hdr *hdr;
 591         const struct rt2x00_rate *rate;
 592         unsigned int header_size;
 593         unsigned int align;
 594         unsigned int i;
 595         int idx = -1;
 596
 597         /*
 598          * Allocate a new sk_buffer. If no new buffer available, drop the
 599          * received frame and reuse the existing buffer.
 600          */
 601         skb = rt2x00queue_alloc_rxskb(rt2x00dev, entry);
 602         if (!skb)
 603                 return;
 604
 605         /*
 606          * Unmap the skb.
 607          */
 608         rt2x00queue_unmap_skb(rt2x00dev, entry->skb);
 609
 610         /*
 611          * Extract the RXD details.
 612          */
 613         memset(&rxdesc, 0, sizeof(rxdesc));
 614         rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
 615
 616         /*
 617          * The data behind the ieee80211 header must be
 618          * aligned on a 4 byte boundary.
 619          */
 620         header_size = ieee80211_get_hdrlen_from_skb(entry->skb);
 621         align = ((unsigned long)(entry->skb->data + header_size)) & 3;
 622
 623         if (align) {
 624                 skb_push(entry->skb, align);
 625                 /* Move entire frame in 1 command */
 626                 memmove(entry->skb->data, entry->skb->data + align,
 627                         rxdesc.size);
 628         }
 629
 630         /* Update data pointers, trim buffer to correct size */
 631         skb_trim(entry->skb, rxdesc.size);
 632
 633         /*
 634          * Update RX statistics.
 635          */
 636         sband = &rt2x00dev->bands[rt2x00dev->curr_band];
 637         for (i = 0; i < sband->n_bitrates; i++) {
 638                 rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
 639
 640                 if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) &&
 641                      (rate->plcp == rxdesc.signal)) ||
 642                     (!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) &&
 643                       (rate->bitrate == rxdesc.signal))) {
 644                         idx = i;
 645                         break;
 646                 }
 647         }
 648
 649         if (idx < 0) {
 650                 WARNING(rt2x00dev, "Frame received with unrecognized signal,"
 651                         "signal=0x%.2x, plcp=%d.\n", rxdesc.signal,
 652                         !!(rxdesc.dev_flags & RXDONE_SIGNAL_PLCP));
 653                 idx = 0;
 654         }
 655
 656         /*
 657          * Only update link status if this is a beacon frame carrying our bssid.
 658          */
 659         hdr = (struct ieee80211_hdr *)entry->skb->data;
 660         if (ieee80211_is_beacon(hdr->frame_control) &&
 661             (rxdesc.dev_flags & RXDONE_MY_BSS))
 662                 rt2x00lib_update_link_stats(&rt2x00dev->link, rxdesc.rssi);
 663
 664         rt2x00dev->link.qual.rx_success++;
 665
 666         rx_status->rate_idx = idx;
 667         rx_status->qual =
 668             rt2x00lib_calculate_link_signal(rt2x00dev, rxdesc.rssi);
 669         rx_status->signal = rxdesc.rssi;
 670         rx_status->flag = rxdesc.flags;
 671         rx_status->antenna = rt2x00dev->link.ant.active.rx;
 672
 673         /*
 674          * Send frame to mac80211 & debugfs.
 675          * mac80211 will clean up the skb structure.
 676          */
 677         rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_RXDONE, entry->skb);
 678         ieee80211_rx_irqsafe(rt2x00dev->hw, entry->skb, rx_status);
 679
 680         /*
 681          * Replace the skb with the freshly allocated one.
 682          */
 683         entry->skb = skb;
 684         entry->flags = 0;
 685
 686         rt2x00dev->ops->lib->init_rxentry(rt2x00dev, entry);
 687
 688         rt2x00queue_index_inc(entry->queue, Q_INDEX);
 689 }
 690 EXPORT_SYMBOL_GPL(rt2x00lib_rxdone);
 691
 692 /*
 693  * Driver initialization handlers.
 694  */
 695 const struct rt2x00_rate rt2x00_supported_rates[12] = {
 696         {
 697                 .flags = DEV_RATE_CCK | DEV_RATE_BASIC,
 698                 .bitrate = 10,
 699                 .ratemask = BIT(0),
 700                 .plcp = 0x00,
 701         },
 702         {
 703                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
 704                 .bitrate = 20,
 705                 .ratemask = BIT(1),
 706                 .plcp = 0x01,
 707         },
 708         {
 709                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
 710                 .bitrate = 55,
 711                 .ratemask = BIT(2),
 712                 .plcp = 0x02,
 713         },
 714         {
 715                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE | DEV_RATE_BASIC,
 716                 .bitrate = 110,
 717                 .ratemask = BIT(3),
 718                 .plcp = 0x03,
 719         },
 720         {
 721                 .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
 722                 .bitrate = 60,
 723                 .ratemask = BIT(4),
 724                 .plcp = 0x0b,
 725         },
 726         {
 727                 .flags = DEV_RATE_OFDM,
 728                 .bitrate = 90,
 729                 .ratemask = BIT(5),
 730                 .plcp = 0x0f,
 731         },
 732         {
 733                 .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
 734                 .bitrate = 120,
 735                 .ratemask = BIT(6),
 736                 .plcp = 0x0a,
 737         },
 738         {
 739                 .flags = DEV_RATE_OFDM,
 740                 .bitrate = 180,
 741                 .ratemask = BIT(7),
 742                 .plcp = 0x0e,
 743         },
 744         {
 745                 .flags = DEV_RATE_OFDM | DEV_RATE_BASIC,
 746                 .bitrate = 240,
 747                 .ratemask = BIT(8),
 748                 .plcp = 0x09,
 749         },
 750         {
 751                 .flags = DEV_RATE_OFDM,
 752                 .bitrate = 360,
 753                 .ratemask = BIT(9),
 754                 .plcp = 0x0d,
 755         },
 756         {
 757                 .flags = DEV_RATE_OFDM,
 758                 .bitrate = 480,
 759                 .ratemask = BIT(10),
 760                 .plcp = 0x08,
 761         },
 762         {
 763                 .flags = DEV_RATE_OFDM,
 764                 .bitrate = 540,
 765                 .ratemask = BIT(11),
 766                 .plcp = 0x0c,
 767         },
 768 };
 769
 770 static void rt2x00lib_channel(struct ieee80211_channel *entry,
 771                               const int channel, const int tx_power,
 772                               const int value)
 773 {
 774         entry->center_freq = ieee80211_channel_to_frequency(channel);
 775         entry->hw_value = value;
 776         entry->max_power = tx_power;
 777         entry->max_antenna_gain = 0xff;
 778 }
 779
 780 static void rt2x00lib_rate(struct ieee80211_rate *entry,
 781                            const u16 index, const struct rt2x00_rate *rate)
 782 {
 783         entry->flags = 0;
 784         entry->bitrate = rate->bitrate;
 785         entry->hw_value = rt2x00_create_rate_hw_value(index, 0);
 786         entry->hw_value_short = entry->hw_value;
 787
 788         if (rate->flags & DEV_RATE_SHORT_PREAMBLE) {
 789                 entry->flags |= IEEE80211_RATE_SHORT_PREAMBLE;
 790                 entry->hw_value_short |= rt2x00_create_rate_hw_value(index, 1);
 791         }
 792 }
 793
 794 static int rt2x00lib_probe_hw_modes(struct rt2x00_dev *rt2x00dev,
 795                                     struct hw_mode_spec *spec)
 796 {
 797         struct ieee80211_hw *hw = rt2x00dev->hw;
 798         struct ieee80211_channel *channels;
 799         struct ieee80211_rate *rates;
 800         unsigned int num_rates;
 801         unsigned int i;
 802         unsigned char tx_power;
 803
 804         num_rates = 0;
 805         if (spec->supported_rates & SUPPORT_RATE_CCK)
 806                 num_rates += 4;
 807         if (spec->supported_rates & SUPPORT_RATE_OFDM)
 808                 num_rates += 8;
 809
 810         channels = kzalloc(sizeof(*channels) * spec->num_channels, GFP_KERNEL);
 811         if (!channels)
 812                 return -ENOMEM;
 813
 814         rates = kzalloc(sizeof(*rates) * num_rates, GFP_KERNEL);
 815         if (!rates)
 816                 goto exit_free_channels;
 817
 818         /*
 819          * Initialize Rate list.
 820          */
 821         for (i = 0; i < num_rates; i++)
 822                 rt2x00lib_rate(&rates[i], i, rt2x00_get_rate(i));
 823
 824         /*
 825          * Initialize Channel list.
 826          */
 827         for (i = 0; i < spec->num_channels; i++) {
 828                 if (spec->channels[i].channel <= 14) {
 829                         if (spec->tx_power_bg)
 830                                 tx_power = spec->tx_power_bg[i];
 831                         else
 832                                 tx_power = spec->tx_power_default;
 833                 } else {
 834                         if (spec->tx_power_a)
 835                                 tx_power = spec->tx_power_a[i];
 836                         else
 837                                 tx_power = spec->tx_power_default;
 838                 }
 839
 840                 rt2x00lib_channel(&channels[i],
 841                                   spec->channels[i].channel, tx_power, i);
 842         }
 843
 844         /*
 845          * Intitialize 802.11b, 802.11g
 846          * Rates: CCK, OFDM.
 847          * Channels: 2.4 GHz
 848          */
 849         if (spec->supported_bands & SUPPORT_BAND_2GHZ) {
 850                 rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_channels = 14;
 851                 rt2x00dev->bands[IEEE80211_BAND_2GHZ].n_bitrates = num_rates;
 852                 rt2x00dev->bands[IEEE80211_BAND_2GHZ].channels = channels;
 853                 rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates;
 854                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 855                     &rt2x00dev->bands[IEEE80211_BAND_2GHZ];
 856         }
 857
 858         /*
 859          * Intitialize 802.11a
 860          * Rates: OFDM.
 861          * Channels: OFDM, UNII, HiperLAN2.
 862          */
 863         if (spec->supported_bands & SUPPORT_BAND_5GHZ) {
 864                 rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_channels =
 865                     spec->num_channels - 14;
 866                 rt2x00dev->bands[IEEE80211_BAND_5GHZ].n_bitrates =
 867                     num_rates - 4;
 868                 rt2x00dev->bands[IEEE80211_BAND_5GHZ].channels = &channels[14];
 869                 rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4];
 870                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 871                     &rt2x00dev->bands[IEEE80211_BAND_5GHZ];
 872         }
 873
 874         return 0;
 875
 876  exit_free_channels:
 877         kfree(channels);
 878         ERROR(rt2x00dev, "Allocation ieee80211 modes failed.\n");
 879         return -ENOMEM;
 880 }
 881
 882 static void rt2x00lib_remove_hw(struct rt2x00_dev *rt2x00dev)
 883 {
 884         if (test_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags))
 885                 ieee80211_unregister_hw(rt2x00dev->hw);
 886
 887         if (likely(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ])) {
 888                 kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels);
 889                 kfree(rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->bitrates);
 890                 rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = NULL;
 891                 rt2x00dev->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
 892         }
 893 }
 894
 895 static int rt2x00lib_probe_hw(struct rt2x00_dev *rt2x00dev)
 896 {
 897         struct hw_mode_spec *spec = &rt2x00dev->spec;
 898         int status;
 899
 900         /*
 901          * Initialize HW modes.
 902          */
 903         status = rt2x00lib_probe_hw_modes(rt2x00dev, spec);
 904         if (status)
 905                 return status;
 906
 907         /*
 908          * Initialize HW fields.
 909          */
 910         rt2x00dev->hw->queues = rt2x00dev->ops->tx_queues;
 911
 912         /*
 913          * Register HW.
 914          */
 915         status = ieee80211_register_hw(rt2x00dev->hw);
 916         if (status) {
 917                 rt2x00lib_remove_hw(rt2x00dev);
 918                 return status;
 919         }
 920
 921         __set_bit(DEVICE_REGISTERED_HW, &rt2x00dev->flags);
 922
 923         return 0;
 924 }
 925
 926 /*
 927  * Initialization/uninitialization handlers.
 928  */
 929 static void rt2x00lib_uninitialize(struct rt2x00_dev *rt2x00dev)
 930 {
 931         if (!__test_and_clear_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
 932                 return;
 933
 934         /*
 935          * Unregister extra components.
 936          */
 937         rt2x00rfkill_unregister(rt2x00dev);
 938
 939         /*
 940          * Allow the HW to uninitialize.
 941          */
 942         rt2x00dev->ops->lib->uninitialize(rt2x00dev);
 943
 944         /*
 945          * Free allocated queue entries.
 946          */
 947         rt2x00queue_uninitialize(rt2x00dev);
 948 }
 949
 950 static int rt2x00lib_initialize(struct rt2x00_dev *rt2x00dev)
 951 {
 952         int status;
 953
 954         if (test_bit(DEVICE_INITIALIZED, &rt2x00dev->flags))
 955                 return 0;
 956
 957         /*
 958          * Allocate all queue entries.
 959          */
 960         status = rt2x00queue_initialize(rt2x00dev);
 961         if (status)
 962                 return status;
 963
 964         /*
 965          * Initialize the device.
 966          */
 967         status = rt2x00dev->ops->lib->initialize(rt2x00dev);
 968         if (status) {
 969                 rt2x00queue_uninitialize(rt2x00dev);
 970                 return status;
 971         }
 972
 973         __set_bit(DEVICE_INITIALIZED, &rt2x00dev->flags);
 974
 975         /*
 976          * Register the extra components.
 977          */
 978         rt2x00rfkill_register(rt2x00dev);
 979
 980         return 0;
 981 }
 982
 983 int rt2x00lib_start(struct rt2x00_dev *rt2x00dev)
 984 {
 985         int retval;
 986
 987         if (test_bit(DEVICE_STARTED, &rt2x00dev->flags))
 988                 return 0;
 989
 990         /*
 991          * If this is the first interface which is added,
 992          * we should load the firmware now.
 993          */
 994         retval = rt2x00lib_load_firmware(rt2x00dev);
 995         if (retval)
 996                 return retval;
 997
 998         /*
 999          * Initialize the device.
1000          */
1001         retval = rt2x00lib_initialize(rt2x00dev);
1002         if (retval)
1003                 return retval;
1004
1005         /*
1006          * Enable radio.
1007          */
1008         retval = rt2x00lib_enable_radio(rt2x00dev);
1009         if (retval) {
1010                 rt2x00lib_uninitialize(rt2x00dev);
1011                 return retval;
1012         }
1013
1014         rt2x00dev->intf_ap_count = 0;
1015         rt2x00dev->intf_sta_count = 0;
1016         rt2x00dev->intf_associated = 0;
1017
1018         __set_bit(DEVICE_STARTED, &rt2x00dev->flags);
1019
1020         return 0;
1021 }
1022
1023 void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev)
1024 {
1025         if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
1026                 return;
1027
1028         /*
1029          * Perhaps we can add something smarter here,
1030          * but for now just disabling the radio should do.
1031          */
1032         rt2x00lib_disable_radio(rt2x00dev);
1033
1034         rt2x00dev->intf_ap_count = 0;
1035         rt2x00dev->intf_sta_count = 0;
1036         rt2x00dev->intf_associated = 0;
1037
1038         __clear_bit(DEVICE_STARTED, &rt2x00dev->flags);
1039 }
1040
1041 /*
1042  * driver allocation handlers.
1043  */
1044 int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
1045 {
1046         int retval = -ENOMEM;
1047
1048         /*
1049          * Make room for rt2x00_intf inside the per-interface
1050          * structure ieee80211_vif.
1051          */
1052         rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf);
1053
1054         /*
1055          * Let the driver probe the device to detect the capabilities.
1056          */
1057         retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev);
1058         if (retval) {
1059                 ERROR(rt2x00dev, "Failed to allocate device.\n");
1060                 goto exit;
1061         }
1062
1063         /*
1064          * Initialize configuration work.
1065          */
1066         INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);
1067         INIT_WORK(&rt2x00dev->filter_work, rt2x00lib_packetfilter_scheduled);
1068         INIT_DELAYED_WORK(&rt2x00dev->link.work, rt2x00lib_link_tuner);
1069
1070         /*
1071          * Allocate queue array.
1072          */
1073         retval = rt2x00queue_allocate(rt2x00dev);
1074         if (retval)
1075                 goto exit;
1076
1077         /*
1078          * Initialize ieee80211 structure.
1079          */
1080         retval = rt2x00lib_probe_hw(rt2x00dev);
1081         if (retval) {
1082                 ERROR(rt2x00dev, "Failed to initialize hw.\n");
1083                 goto exit;
1084         }
1085
1086         /*
1087          * Register extra components.
1088          */
1089         rt2x00leds_register(rt2x00dev);
1090         rt2x00rfkill_allocate(rt2x00dev);
1091         rt2x00debug_register(rt2x00dev);
1092
1093         __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
1094
1095         return 0;
1096
1097 exit:
1098         rt2x00lib_remove_dev(rt2x00dev);
1099
1100         return retval;
1101 }
1102 EXPORT_SYMBOL_GPL(rt2x00lib_probe_dev);
1103
1104 void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev)
1105 {
1106         __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
1107
1108         /*
1109          * Disable radio.
1110          */
1111         rt2x00lib_disable_radio(rt2x00dev);
1112
1113         /*
1114          * Uninitialize device.
1115          */
1116         rt2x00lib_uninitialize(rt2x00dev);
1117
1118         /*
1119          * Free extra components
1120          */
1121         rt2x00debug_deregister(rt2x00dev);
1122         rt2x00rfkill_free(rt2x00dev);
1123         rt2x00leds_unregister(rt2x00dev);
1124
1125         /*
1126          * Free ieee80211_hw memory.
1127          */
1128         rt2x00lib_remove_hw(rt2x00dev);
1129
1130         /*
1131          * Free firmware image.
1132          */
1133         rt2x00lib_free_firmware(rt2x00dev);
1134
1135         /*
1136          * Free queue structures.
1137          */
1138         rt2x00queue_free(rt2x00dev);
1139 }
1140 EXPORT_SYMBOL_GPL(rt2x00lib_remove_dev);
1141
1142 /*
1143  * Device state handlers
1144  */
1145 #ifdef CONFIG_PM
1146 int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state)
1147 {
1148         int retval;
1149
1150         NOTICE(rt2x00dev, "Going to sleep.\n");
1151         __clear_bit(DEVICE_PRESENT, &rt2x00dev->flags);
1152
1153         /*
1154          * Only continue if mac80211 has open interfaces.
1155          */
1156         if (!test_bit(DEVICE_STARTED, &rt2x00dev->flags))
1157                 goto exit;
1158         __set_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags);
1159
1160         /*
1161          * Disable radio.
1162          */
1163         rt2x00lib_stop(rt2x00dev);
1164         rt2x00lib_uninitialize(rt2x00dev);
1165
1166         /*
1167          * Suspend/disable extra components.
1168          */
1169         rt2x00leds_suspend(rt2x00dev);
1170         rt2x00rfkill_suspend(rt2x00dev);
1171         rt2x00debug_deregister(rt2x00dev);
1172
1173 exit:
1174         /*
1175          * Set device mode to sleep for power management,
1176          * on some hardware this call seems to consistently fail.
1177          * From the specifications it is hard to tell why it fails,
1178          * and if this is a "bad thing".
1179          * Overall it is safe to just ignore the failure and
1180          * continue suspending. The only downside is that the
1181          * device will not be in optimal power save mode, but with
1182          * the radio and the other components already disabled the
1183          * device is as good as disabled.
1184          */
1185         retval = rt2x00dev->ops->lib->set_device_state(rt2x00dev, STATE_SLEEP);
1186         if (retval)
1187                 WARNING(rt2x00dev, "Device failed to enter sleep state, "
1188                         "continue suspending.\n");
1189
1190         return 0;
1191 }
1192 EXPORT_SYMBOL_GPL(rt2x00lib_suspend);
1193
1194 static void rt2x00lib_resume_intf(void *data, u8 *mac,
1195                                   struct ieee80211_vif *vif)
1196 {
1197         struct rt2x00_dev *rt2x00dev = data;
1198         struct rt2x00_intf *intf = vif_to_intf(vif);
1199
1200         spin_lock(&intf->lock);
1201
1202         rt2x00lib_config_intf(rt2x00dev, intf,
1203                               vif->type, intf->mac, intf->bssid);
1204
1205
1206         /*
1207          * Master or Ad-hoc mode require a new beacon update.
1208          */
1209         if (vif->type == IEEE80211_IF_TYPE_AP ||
1210             vif->type == IEEE80211_IF_TYPE_IBSS)
1211                 intf->delayed_flags |= DELAYED_UPDATE_BEACON;
1212
1213         spin_unlock(&intf->lock);
1214 }
1215
1216 int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev)
1217 {
1218         int retval;
1219
1220         NOTICE(rt2x00dev, "Waking up.\n");
1221
1222         /*
1223          * Restore/enable extra components.
1224          */
1225         rt2x00debug_register(rt2x00dev);
1226         rt2x00rfkill_resume(rt2x00dev);
1227         rt2x00leds_resume(rt2x00dev);
1228
1229         /*
1230          * Only continue if mac80211 had open interfaces.
1231          */
1232         if (!__test_and_clear_bit(DEVICE_STARTED_SUSPEND, &rt2x00dev->flags))
1233                 return 0;
1234
1235         /*
1236          * Reinitialize device and all active interfaces.
1237          */
1238         retval = rt2x00lib_start(rt2x00dev);
1239         if (retval)
1240                 goto exit;
1241
1242         /*
1243          * Reconfigure device.
1244          */
1245         rt2x00lib_config(rt2x00dev, &rt2x00dev->hw->conf, 1);
1246         if (!rt2x00dev->hw->conf.radio_enabled)
1247                 rt2x00lib_disable_radio(rt2x00dev);
1248
1249         /*
1250          * Iterator over each active interface to
1251          * reconfigure the hardware.
1252          */
1253         ieee80211_iterate_active_interfaces(rt2x00dev->hw,
1254                                             rt2x00lib_resume_intf, rt2x00dev);
1255
1256         /*
1257          * We are ready again to receive requests from mac80211.
1258          */
1259         __set_bit(DEVICE_PRESENT, &rt2x00dev->flags);
1260
1261         /*
1262          * It is possible that during that mac80211 has attempted
1263          * to send frames while we were suspending or resuming.
1264          * In that case we have disabled the TX queue and should
1265          * now enable it again
1266          */
1267         ieee80211_wake_queues(rt2x00dev->hw);
1268
1269         /*
1270          * During interface iteration we might have changed the
1271          * delayed_flags, time to handles the event by calling
1272          * the work handler directly.
1273          */
1274         rt2x00lib_intf_scheduled(&rt2x00dev->intf_work);
1275
1276         return 0;
1277
1278 exit:
1279         rt2x00lib_disable_radio(rt2x00dev);
1280         rt2x00lib_uninitialize(rt2x00dev);
1281         rt2x00debug_deregister(rt2x00dev);
1282
1283         return retval;
1284 }
1285 EXPORT_SYMBOL_GPL(rt2x00lib_resume);
1286 #endif /* CONFIG_PM */
1287
1288 /*
1289  * rt2x00lib module information.
1290  */
1291 MODULE_AUTHOR(DRV_PROJECT);
1292 MODULE_VERSION(DRV_VERSION);
1293 MODULE_DESCRIPTION("rt2x00 library");
1294 MODULE_LICENSE("GPL");