--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c @@ -3271,6 +3271,18 @@ static bool ar9300_check_eeprom_header(s return ar9300_check_header(header); } +static int ar9300_eeprom_restore_flash(struct ath_hw *ah, u8 *mptr, + int mdata_size) +{ + struct ath_common *common = ath9k_hw_common(ah); + u16 *data = (u16 *) mptr; + int i; + + for (i = 0; i < mdata_size / 2; i++, data++) + ath9k_hw_nvram_read(common, i, data); + + return 0; +} /* * Read the configuration data from the eeprom. * The data can be put in any specified memory buffer. @@ -3293,6 +3305,9 @@ static int ar9300_eeprom_restore_interna struct ath_common *common = ath9k_hw_common(ah); eeprom_read_op read; + if (ath9k_hw_use_flash(ah)) + return ar9300_eeprom_restore_flash(ah, mptr, mdata_size); + word = kzalloc(2048, GFP_KERNEL); if (!word) return -1; --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -419,10 +419,6 @@ static void ath9k_hw_init_defaults(struc ah->hw_version.magic = AR5416_MAGIC; ah->hw_version.subvendorid = 0; - ah->ah_flags = 0; - if (!AR_SREV_9100(ah)) - ah->ah_flags = AH_USE_EEPROM; - ah->atim_window = 0; ah->sta_id1_defaults = AR_STA_ID1_CRPT_MIC_ENABLE | --- a/drivers/net/wireless/ath/ath9k/init.c +++ b/drivers/net/wireless/ath/ath9k/init.c @@ -533,6 +533,9 @@ static int ath9k_init_softc(u16 devid, s ah->hw_version.subsysid = subsysid; sc->sc_ah = ah; + if (!sc->dev->platform_data) + ah->ah_flags |= AH_USE_EEPROM; + common = ath9k_hw_common(ah); common->ops = &ath9k_common_ops; common->bus_ops = bus_ops; --- a/drivers/net/wireless/ath/ath9k/pci.c +++ b/drivers/net/wireless/ath/ath9k/pci.c @@ -16,6 +16,7 @@ #include #include +#include #include "ath9k.h" static DEFINE_PCI_DEVICE_TABLE(ath_pci_id_table) = { @@ -53,21 +54,36 @@ static void ath_pci_read_cachesize(struc static bool ath_pci_eeprom_read(struct ath_common *common, u32 off, u16 *data) { - struct ath_hw *ah = (struct ath_hw *) common->ah; + struct ath_softc *sc = (struct ath_softc *) common->priv; + struct ath9k_platform_data *pdata = sc->dev->platform_data; - common->ops->read(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S)); + if (pdata) { + if (off >= (ARRAY_SIZE(pdata->eeprom_data))) { + ath_print(common, ATH_DBG_FATAL, + "%s: eeprom read failed, offset %08x " + "is out of range\n", + __func__, off); + } + + *data = pdata->eeprom_data[off]; + } else { + struct ath_hw *ah = (struct ath_hw *) common->ah; + + common->ops->read(ah, AR5416_EEPROM_OFFSET + + (off << AR5416_EEPROM_S)); + + if (!ath9k_hw_wait(ah, + AR_EEPROM_STATUS_DATA, + AR_EEPROM_STATUS_DATA_BUSY | + AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, + AH_WAIT_TIMEOUT)) { + return false; + } - if (!ath9k_hw_wait(ah, - AR_EEPROM_STATUS_DATA, - AR_EEPROM_STATUS_DATA_BUSY | - AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0, - AH_WAIT_TIMEOUT)) { - return false; + *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), + AR_EEPROM_STATUS_DATA_VAL); } - *data = MS(common->ops->read(ah, AR_EEPROM_STATUS_DATA), - AR_EEPROM_STATUS_DATA_VAL); - return true; } --- a/include/net/regulatory.h +++ b/include/net/regulatory.h @@ -43,6 +43,12 @@ enum environment_cap { * @intersect: indicates whether the wireless core should intersect * the requested regulatory domain with the presently set regulatory * domain. + * @processed: indicates whether or not this requests has already been + * processed. When the last request is processed it means that the + * currently regulatory domain set on cfg80211 is updated from + * CRDA and can be used by other regulatory requests. When a + * the last request is not yet processed we must yield until it + * is processed before processing any new requests. * @country_ie_checksum: checksum of the last processed and accepted * country IE * @country_ie_env: lets us know if the AP is telling us we are outdoor, @@ -54,6 +60,7 @@ struct regulatory_request { enum nl80211_reg_initiator initiator; char alpha2[2]; bool intersect; + bool processed; enum environment_cap country_ie_env; struct list_head list; }; --- a/net/wireless/reg.c +++ b/net/wireless/reg.c @@ -96,6 +96,9 @@ struct reg_beacon { struct ieee80211_channel chan; }; +static void reg_todo(struct work_struct *work); +static DECLARE_WORK(reg_work, reg_todo); + /* We keep a static world regulatory domain in case of the absence of CRDA */ static const struct ieee80211_regdomain world_regdom = { .n_reg_rules = 5, @@ -1317,6 +1320,21 @@ static int ignore_request(struct wiphy * return -EINVAL; } +static void reg_set_request_processed(void) +{ + bool need_more_processing = false; + + last_request->processed = true; + + spin_lock(®_requests_lock); + if (!list_empty(®_requests_list)) + need_more_processing = true; + spin_unlock(®_requests_lock); + + if (need_more_processing) + schedule_work(®_work); +} + /** * __regulatory_hint - hint to the wireless core a regulatory domain * @wiphy: if the hint comes from country information from an AP, this @@ -1392,8 +1410,10 @@ new_request: * have applied the requested regulatory domain before we just * inform userspace we have processed the request */ - if (r == -EALREADY) + if (r == -EALREADY) { nl80211_send_reg_change_event(last_request); + reg_set_request_processed(); + } return r; } @@ -1409,16 +1429,13 @@ static void reg_process_hint(struct regu BUG_ON(!reg_request->alpha2); - mutex_lock(&cfg80211_mutex); - mutex_lock(®_mutex); - if (wiphy_idx_valid(reg_request->wiphy_idx)) wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx); if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER && !wiphy) { kfree(reg_request); - goto out; + return; } r = __regulatory_hint(wiphy, reg_request); @@ -1426,28 +1443,46 @@ static void reg_process_hint(struct regu if (r == -EALREADY && wiphy && wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) wiphy_update_regulatory(wiphy, initiator); -out: - mutex_unlock(®_mutex); - mutex_unlock(&cfg80211_mutex); } -/* Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* */ +/* + * Processes regulatory hints, this is all the NL80211_REGDOM_SET_BY_* + * Regulatory hints come on a first come first serve basis and we + * must process each one atomically. + */ static void reg_process_pending_hints(void) - { +{ struct regulatory_request *reg_request; + mutex_lock(&cfg80211_mutex); + mutex_lock(®_mutex); + + /* When last_request->processed becomes true this will be rescheduled */ + if (last_request && !last_request->processed) { + REG_DBG_PRINT("Pending regulatory request, waiting " + "for it to be processed..."); + goto out; + } + spin_lock(®_requests_lock); - while (!list_empty(®_requests_list)) { - reg_request = list_first_entry(®_requests_list, - struct regulatory_request, - list); - list_del_init(®_request->list); + if (list_empty(®_requests_list)) { spin_unlock(®_requests_lock); - reg_process_hint(reg_request); - spin_lock(®_requests_lock); + goto out; } + + reg_request = list_first_entry(®_requests_list, + struct regulatory_request, + list); + list_del_init(®_request->list); + spin_unlock(®_requests_lock); + + reg_process_hint(reg_request); + +out: + mutex_unlock(®_mutex); + mutex_unlock(&cfg80211_mutex); } /* Processes beacon hints -- this has nothing to do with country IEs */ @@ -1494,8 +1529,6 @@ static void reg_todo(struct work_struct reg_process_pending_beacon_hints(); } -static DECLARE_WORK(reg_work, reg_todo); - static void queue_regulatory_request(struct regulatory_request *request) { if (isalpha(request->alpha2[0])) @@ -1530,12 +1563,7 @@ static int regulatory_hint_core(const ch request->alpha2[1] = alpha2[1]; request->initiator = NL80211_REGDOM_SET_BY_CORE; - /* - * This ensures last_request is populated once modules - * come swinging in and calling regulatory hints and - * wiphy_apply_custom_regulatory(). - */ - reg_process_hint(request); + queue_regulatory_request(request); return 0; } @@ -2061,6 +2089,8 @@ int set_regdom(const struct ieee80211_re nl80211_send_reg_change_event(last_request); + reg_set_request_processed(); + mutex_unlock(®_mutex); return r;