net: ptp: do not reimplement PTP/BPF classifier
[linux/fpc-iii.git] / drivers / net / wireless / ti / wlcore / init.c
blob199e941208644864e16479c4eb586afe8df69e86
1 /*
2 * This file is part of wl1271
4 * Copyright (C) 2009 Nokia Corporation
6 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * version 2 as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/slab.h>
28 #include "debug.h"
29 #include "init.h"
30 #include "wl12xx_80211.h"
31 #include "acx.h"
32 #include "cmd.h"
33 #include "tx.h"
34 #include "io.h"
35 #include "hw_ops.h"
37 int wl1271_init_templates_config(struct wl1271 *wl)
39 int ret, i;
40 size_t max_size;
42 /* send empty templates for fw memory reservation */
43 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
44 wl->scan_templ_id_2_4, NULL,
45 WL1271_CMD_TEMPL_MAX_SIZE,
46 0, WL1271_RATE_AUTOMATIC);
47 if (ret < 0)
48 return ret;
50 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
51 wl->scan_templ_id_5,
52 NULL, WL1271_CMD_TEMPL_MAX_SIZE, 0,
53 WL1271_RATE_AUTOMATIC);
54 if (ret < 0)
55 return ret;
57 if (wl->quirks & WLCORE_QUIRK_DUAL_PROBE_TMPL) {
58 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
59 wl->sched_scan_templ_id_2_4,
60 NULL,
61 WL1271_CMD_TEMPL_MAX_SIZE,
62 0, WL1271_RATE_AUTOMATIC);
63 if (ret < 0)
64 return ret;
66 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
67 wl->sched_scan_templ_id_5,
68 NULL,
69 WL1271_CMD_TEMPL_MAX_SIZE,
70 0, WL1271_RATE_AUTOMATIC);
71 if (ret < 0)
72 return ret;
75 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
76 CMD_TEMPL_NULL_DATA, NULL,
77 sizeof(struct wl12xx_null_data_template),
78 0, WL1271_RATE_AUTOMATIC);
79 if (ret < 0)
80 return ret;
82 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
83 CMD_TEMPL_PS_POLL, NULL,
84 sizeof(struct wl12xx_ps_poll_template),
85 0, WL1271_RATE_AUTOMATIC);
86 if (ret < 0)
87 return ret;
89 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
90 CMD_TEMPL_QOS_NULL_DATA, NULL,
91 sizeof
92 (struct ieee80211_qos_hdr),
93 0, WL1271_RATE_AUTOMATIC);
94 if (ret < 0)
95 return ret;
97 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
98 CMD_TEMPL_PROBE_RESPONSE, NULL,
99 WL1271_CMD_TEMPL_DFLT_SIZE,
100 0, WL1271_RATE_AUTOMATIC);
101 if (ret < 0)
102 return ret;
104 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
105 CMD_TEMPL_BEACON, NULL,
106 WL1271_CMD_TEMPL_DFLT_SIZE,
107 0, WL1271_RATE_AUTOMATIC);
108 if (ret < 0)
109 return ret;
111 max_size = sizeof(struct wl12xx_arp_rsp_template) +
112 WL1271_EXTRA_SPACE_MAX;
113 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
114 CMD_TEMPL_ARP_RSP, NULL,
115 max_size,
116 0, WL1271_RATE_AUTOMATIC);
117 if (ret < 0)
118 return ret;
121 * Put very large empty placeholders for all templates. These
122 * reserve memory for later.
124 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
125 CMD_TEMPL_AP_PROBE_RESPONSE, NULL,
126 WL1271_CMD_TEMPL_MAX_SIZE,
127 0, WL1271_RATE_AUTOMATIC);
128 if (ret < 0)
129 return ret;
131 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
132 CMD_TEMPL_AP_BEACON, NULL,
133 WL1271_CMD_TEMPL_MAX_SIZE,
134 0, WL1271_RATE_AUTOMATIC);
135 if (ret < 0)
136 return ret;
138 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
139 CMD_TEMPL_DEAUTH_AP, NULL,
140 sizeof
141 (struct wl12xx_disconn_template),
142 0, WL1271_RATE_AUTOMATIC);
143 if (ret < 0)
144 return ret;
146 for (i = 0; i < WLCORE_MAX_KLV_TEMPLATES; i++) {
147 ret = wl1271_cmd_template_set(wl, WL12XX_INVALID_ROLE_ID,
148 CMD_TEMPL_KLV, NULL,
149 sizeof(struct ieee80211_qos_hdr),
150 i, WL1271_RATE_AUTOMATIC);
151 if (ret < 0)
152 return ret;
155 return 0;
158 static int wl1271_ap_init_deauth_template(struct wl1271 *wl,
159 struct wl12xx_vif *wlvif)
161 struct wl12xx_disconn_template *tmpl;
162 int ret;
163 u32 rate;
165 tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
166 if (!tmpl) {
167 ret = -ENOMEM;
168 goto out;
171 tmpl->header.frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
172 IEEE80211_STYPE_DEAUTH);
174 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
175 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
176 CMD_TEMPL_DEAUTH_AP,
177 tmpl, sizeof(*tmpl), 0, rate);
179 out:
180 kfree(tmpl);
181 return ret;
184 static int wl1271_ap_init_null_template(struct wl1271 *wl,
185 struct ieee80211_vif *vif)
187 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
188 struct ieee80211_hdr_3addr *nullfunc;
189 int ret;
190 u32 rate;
192 nullfunc = kzalloc(sizeof(*nullfunc), GFP_KERNEL);
193 if (!nullfunc) {
194 ret = -ENOMEM;
195 goto out;
198 nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
199 IEEE80211_STYPE_NULLFUNC |
200 IEEE80211_FCTL_FROMDS);
202 /* nullfunc->addr1 is filled by FW */
204 memcpy(nullfunc->addr2, vif->addr, ETH_ALEN);
205 memcpy(nullfunc->addr3, vif->addr, ETH_ALEN);
207 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
208 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
209 CMD_TEMPL_NULL_DATA, nullfunc,
210 sizeof(*nullfunc), 0, rate);
212 out:
213 kfree(nullfunc);
214 return ret;
217 static int wl1271_ap_init_qos_null_template(struct wl1271 *wl,
218 struct ieee80211_vif *vif)
220 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
221 struct ieee80211_qos_hdr *qosnull;
222 int ret;
223 u32 rate;
225 qosnull = kzalloc(sizeof(*qosnull), GFP_KERNEL);
226 if (!qosnull) {
227 ret = -ENOMEM;
228 goto out;
231 qosnull->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
232 IEEE80211_STYPE_QOS_NULLFUNC |
233 IEEE80211_FCTL_FROMDS);
235 /* qosnull->addr1 is filled by FW */
237 memcpy(qosnull->addr2, vif->addr, ETH_ALEN);
238 memcpy(qosnull->addr3, vif->addr, ETH_ALEN);
240 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
241 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
242 CMD_TEMPL_QOS_NULL_DATA, qosnull,
243 sizeof(*qosnull), 0, rate);
245 out:
246 kfree(qosnull);
247 return ret;
250 static int wl12xx_init_rx_config(struct wl1271 *wl)
252 int ret;
254 ret = wl1271_acx_rx_msdu_life_time(wl);
255 if (ret < 0)
256 return ret;
258 return 0;
261 static int wl12xx_init_phy_vif_config(struct wl1271 *wl,
262 struct wl12xx_vif *wlvif)
264 int ret;
266 ret = wl1271_acx_slot(wl, wlvif, DEFAULT_SLOT_TIME);
267 if (ret < 0)
268 return ret;
270 ret = wl1271_acx_service_period_timeout(wl, wlvif);
271 if (ret < 0)
272 return ret;
274 ret = wl1271_acx_rts_threshold(wl, wlvif, wl->hw->wiphy->rts_threshold);
275 if (ret < 0)
276 return ret;
278 return 0;
281 static int wl1271_init_sta_beacon_filter(struct wl1271 *wl,
282 struct wl12xx_vif *wlvif)
284 int ret;
286 ret = wl1271_acx_beacon_filter_table(wl, wlvif);
287 if (ret < 0)
288 return ret;
290 /* disable beacon filtering until we get the first beacon */
291 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
292 if (ret < 0)
293 return ret;
295 return 0;
298 int wl1271_init_pta(struct wl1271 *wl)
300 int ret;
302 ret = wl12xx_acx_sg_cfg(wl);
303 if (ret < 0)
304 return ret;
306 ret = wl1271_acx_sg_enable(wl, wl->sg_enabled);
307 if (ret < 0)
308 return ret;
310 return 0;
313 int wl1271_init_energy_detection(struct wl1271 *wl)
315 int ret;
317 ret = wl1271_acx_cca_threshold(wl);
318 if (ret < 0)
319 return ret;
321 return 0;
324 static int wl1271_init_beacon_broadcast(struct wl1271 *wl,
325 struct wl12xx_vif *wlvif)
327 int ret;
329 ret = wl1271_acx_bcn_dtim_options(wl, wlvif);
330 if (ret < 0)
331 return ret;
333 return 0;
336 static int wl12xx_init_fwlog(struct wl1271 *wl)
338 int ret;
340 if (wl->quirks & WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED)
341 return 0;
343 ret = wl12xx_cmd_config_fwlog(wl);
344 if (ret < 0)
345 return ret;
347 return 0;
350 /* generic sta initialization (non vif-specific) */
351 static int wl1271_sta_hw_init(struct wl1271 *wl, struct wl12xx_vif *wlvif)
353 int ret;
355 /* PS config */
356 ret = wl12xx_acx_config_ps(wl, wlvif);
357 if (ret < 0)
358 return ret;
360 /* FM WLAN coexistence */
361 ret = wl1271_acx_fm_coex(wl);
362 if (ret < 0)
363 return ret;
365 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
366 if (ret < 0)
367 return ret;
369 return 0;
372 static int wl1271_sta_hw_init_post_mem(struct wl1271 *wl,
373 struct ieee80211_vif *vif)
375 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
376 int ret;
378 /* disable the keep-alive feature */
379 ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
380 if (ret < 0)
381 return ret;
383 return 0;
386 /* generic ap initialization (non vif-specific) */
387 static int wl1271_ap_hw_init(struct wl1271 *wl, struct wl12xx_vif *wlvif)
389 int ret;
391 ret = wl1271_init_ap_rates(wl, wlvif);
392 if (ret < 0)
393 return ret;
395 return 0;
398 int wl1271_ap_init_templates(struct wl1271 *wl, struct ieee80211_vif *vif)
400 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
401 int ret;
403 ret = wl1271_ap_init_deauth_template(wl, wlvif);
404 if (ret < 0)
405 return ret;
407 ret = wl1271_ap_init_null_template(wl, vif);
408 if (ret < 0)
409 return ret;
411 ret = wl1271_ap_init_qos_null_template(wl, vif);
412 if (ret < 0)
413 return ret;
416 * when operating as AP we want to receive external beacons for
417 * configuring ERP protection.
419 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
420 if (ret < 0)
421 return ret;
423 return 0;
426 static int wl1271_ap_hw_init_post_mem(struct wl1271 *wl,
427 struct ieee80211_vif *vif)
429 return wl1271_ap_init_templates(wl, vif);
432 int wl1271_init_ap_rates(struct wl1271 *wl, struct wl12xx_vif *wlvif)
434 int i, ret;
435 struct conf_tx_rate_class rc;
436 u32 supported_rates;
438 wl1271_debug(DEBUG_AP, "AP basic rate set: 0x%x",
439 wlvif->basic_rate_set);
441 if (wlvif->basic_rate_set == 0)
442 return -EINVAL;
444 rc.enabled_rates = wlvif->basic_rate_set;
445 rc.long_retry_limit = 10;
446 rc.short_retry_limit = 10;
447 rc.aflags = 0;
448 ret = wl1271_acx_ap_rate_policy(wl, &rc, wlvif->ap.mgmt_rate_idx);
449 if (ret < 0)
450 return ret;
452 /* use the min basic rate for AP broadcast/multicast */
453 rc.enabled_rates = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
454 rc.short_retry_limit = 10;
455 rc.long_retry_limit = 10;
456 rc.aflags = 0;
457 ret = wl1271_acx_ap_rate_policy(wl, &rc, wlvif->ap.bcast_rate_idx);
458 if (ret < 0)
459 return ret;
462 * If the basic rates contain OFDM rates, use OFDM only
463 * rates for unicast TX as well. Else use all supported rates.
465 if (wl->ofdm_only_ap && (wlvif->basic_rate_set & CONF_TX_OFDM_RATES))
466 supported_rates = CONF_TX_OFDM_RATES;
467 else
468 supported_rates = CONF_TX_ENABLED_RATES;
470 /* unconditionally enable HT rates */
471 supported_rates |= CONF_TX_MCS_RATES;
473 /* get extra MIMO or wide-chan rates where the HW supports it */
474 supported_rates |= wlcore_hw_ap_get_mimo_wide_rate_mask(wl, wlvif);
476 /* configure unicast TX rate classes */
477 for (i = 0; i < wl->conf.tx.ac_conf_count; i++) {
478 rc.enabled_rates = supported_rates;
479 rc.short_retry_limit = 10;
480 rc.long_retry_limit = 10;
481 rc.aflags = 0;
482 ret = wl1271_acx_ap_rate_policy(wl, &rc,
483 wlvif->ap.ucast_rate_idx[i]);
484 if (ret < 0)
485 return ret;
488 return 0;
491 static int wl1271_set_ba_policies(struct wl1271 *wl, struct wl12xx_vif *wlvif)
493 /* Reset the BA RX indicators */
494 wlvif->ba_allowed = true;
495 wl->ba_rx_session_count = 0;
497 /* BA is supported in STA/AP modes */
498 if (wlvif->bss_type != BSS_TYPE_AP_BSS &&
499 wlvif->bss_type != BSS_TYPE_STA_BSS) {
500 wlvif->ba_support = false;
501 return 0;
504 wlvif->ba_support = true;
506 /* 802.11n initiator BA session setting */
507 return wl12xx_acx_set_ba_initiator_policy(wl, wlvif);
510 /* vif-specifc initialization */
511 static int wl12xx_init_sta_role(struct wl1271 *wl, struct wl12xx_vif *wlvif)
513 int ret;
515 ret = wl1271_acx_group_address_tbl(wl, wlvif, true, NULL, 0);
516 if (ret < 0)
517 return ret;
519 /* Initialize connection monitoring thresholds */
520 ret = wl1271_acx_conn_monit_params(wl, wlvif, false);
521 if (ret < 0)
522 return ret;
524 /* Beacon filtering */
525 ret = wl1271_init_sta_beacon_filter(wl, wlvif);
526 if (ret < 0)
527 return ret;
529 /* Beacons and broadcast settings */
530 ret = wl1271_init_beacon_broadcast(wl, wlvif);
531 if (ret < 0)
532 return ret;
534 /* Configure rssi/snr averaging weights */
535 ret = wl1271_acx_rssi_snr_avg_weights(wl, wlvif);
536 if (ret < 0)
537 return ret;
539 return 0;
542 /* vif-specific intialization */
543 static int wl12xx_init_ap_role(struct wl1271 *wl, struct wl12xx_vif *wlvif)
545 int ret;
547 ret = wl1271_acx_ap_max_tx_retry(wl, wlvif);
548 if (ret < 0)
549 return ret;
551 /* initialize Tx power */
552 ret = wl1271_acx_tx_power(wl, wlvif, wlvif->power_level);
553 if (ret < 0)
554 return ret;
556 return 0;
559 int wl1271_init_vif_specific(struct wl1271 *wl, struct ieee80211_vif *vif)
561 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
562 struct conf_tx_ac_category *conf_ac;
563 struct conf_tx_tid *conf_tid;
564 bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
565 int ret, i;
567 /* consider all existing roles before configuring psm. */
569 if (wl->ap_count == 0 && is_ap) { /* first AP */
570 /* Configure for power always on */
571 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
572 if (ret < 0)
573 return ret;
575 /* unmask ap events */
576 wl->event_mask |= wl->ap_event_mask;
577 ret = wl1271_event_unmask(wl);
578 if (ret < 0)
579 return ret;
580 /* first STA, no APs */
581 } else if (wl->sta_count == 0 && wl->ap_count == 0 && !is_ap) {
582 u8 sta_auth = wl->conf.conn.sta_sleep_auth;
583 /* Configure for power according to debugfs */
584 if (sta_auth != WL1271_PSM_ILLEGAL)
585 ret = wl1271_acx_sleep_auth(wl, sta_auth);
586 /* Configure for ELP power saving */
587 else
588 ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);
590 if (ret < 0)
591 return ret;
594 /* Mode specific init */
595 if (is_ap) {
596 ret = wl1271_ap_hw_init(wl, wlvif);
597 if (ret < 0)
598 return ret;
600 ret = wl12xx_init_ap_role(wl, wlvif);
601 if (ret < 0)
602 return ret;
603 } else {
604 ret = wl1271_sta_hw_init(wl, wlvif);
605 if (ret < 0)
606 return ret;
608 ret = wl12xx_init_sta_role(wl, wlvif);
609 if (ret < 0)
610 return ret;
613 wl12xx_init_phy_vif_config(wl, wlvif);
615 /* Default TID/AC configuration */
616 BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
617 for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
618 conf_ac = &wl->conf.tx.ac_conf[i];
619 ret = wl1271_acx_ac_cfg(wl, wlvif, conf_ac->ac,
620 conf_ac->cw_min, conf_ac->cw_max,
621 conf_ac->aifsn, conf_ac->tx_op_limit);
622 if (ret < 0)
623 return ret;
625 conf_tid = &wl->conf.tx.tid_conf[i];
626 ret = wl1271_acx_tid_cfg(wl, wlvif,
627 conf_tid->queue_id,
628 conf_tid->channel_type,
629 conf_tid->tsid,
630 conf_tid->ps_scheme,
631 conf_tid->ack_policy,
632 conf_tid->apsd_conf[0],
633 conf_tid->apsd_conf[1]);
634 if (ret < 0)
635 return ret;
638 /* Configure HW encryption */
639 ret = wl1271_acx_feature_cfg(wl, wlvif);
640 if (ret < 0)
641 return ret;
643 /* Mode specific init - post mem init */
644 if (is_ap)
645 ret = wl1271_ap_hw_init_post_mem(wl, vif);
646 else
647 ret = wl1271_sta_hw_init_post_mem(wl, vif);
649 if (ret < 0)
650 return ret;
652 /* Configure initiator BA sessions policies */
653 ret = wl1271_set_ba_policies(wl, wlvif);
654 if (ret < 0)
655 return ret;
657 ret = wlcore_hw_init_vif(wl, wlvif);
658 if (ret < 0)
659 return ret;
661 return 0;
664 int wl1271_hw_init(struct wl1271 *wl)
666 int ret;
668 /* Chip-specific hw init */
669 ret = wl->ops->hw_init(wl);
670 if (ret < 0)
671 return ret;
673 /* Init templates */
674 ret = wl1271_init_templates_config(wl);
675 if (ret < 0)
676 return ret;
678 ret = wl12xx_acx_mem_cfg(wl);
679 if (ret < 0)
680 return ret;
682 /* Configure the FW logger */
683 ret = wl12xx_init_fwlog(wl);
684 if (ret < 0)
685 return ret;
687 ret = wlcore_cmd_regdomain_config_locked(wl);
688 if (ret < 0)
689 return ret;
691 /* Bluetooth WLAN coexistence */
692 ret = wl1271_init_pta(wl);
693 if (ret < 0)
694 return ret;
696 /* Default memory configuration */
697 ret = wl1271_acx_init_mem_config(wl);
698 if (ret < 0)
699 return ret;
701 /* RX config */
702 ret = wl12xx_init_rx_config(wl);
703 if (ret < 0)
704 goto out_free_memmap;
706 ret = wl1271_acx_dco_itrim_params(wl);
707 if (ret < 0)
708 goto out_free_memmap;
710 /* Configure TX patch complete interrupt behavior */
711 ret = wl1271_acx_tx_config_options(wl);
712 if (ret < 0)
713 goto out_free_memmap;
715 /* RX complete interrupt pacing */
716 ret = wl1271_acx_init_rx_interrupt(wl);
717 if (ret < 0)
718 goto out_free_memmap;
720 /* Energy detection */
721 ret = wl1271_init_energy_detection(wl);
722 if (ret < 0)
723 goto out_free_memmap;
725 /* Default fragmentation threshold */
726 ret = wl1271_acx_frag_threshold(wl, wl->hw->wiphy->frag_threshold);
727 if (ret < 0)
728 goto out_free_memmap;
730 /* Enable data path */
731 ret = wl1271_cmd_data_path(wl, 1);
732 if (ret < 0)
733 goto out_free_memmap;
735 /* configure PM */
736 ret = wl1271_acx_pm_config(wl);
737 if (ret < 0)
738 goto out_free_memmap;
740 ret = wl12xx_acx_set_rate_mgmt_params(wl);
741 if (ret < 0)
742 goto out_free_memmap;
744 /* configure hangover */
745 ret = wl12xx_acx_config_hangover(wl);
746 if (ret < 0)
747 goto out_free_memmap;
749 return 0;
751 out_free_memmap:
752 kfree(wl->target_mem_map);
753 wl->target_mem_map = NULL;
755 return ret;