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openwrtv4/package/mac80211/patches/310-pending_work.patch

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--- 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 <linux/nl80211.h>
#include <linux/pci.h>
+#include <linux/ath9k_platform.h>
#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(&reg_requests_lock);
+ if (!list_empty(&reg_requests_list))
+ need_more_processing = true;
+ spin_unlock(&reg_requests_lock);
+
+ if (need_more_processing)
+ schedule_work(&reg_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(&reg_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(&reg_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(&reg_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(&reg_requests_lock);
- while (!list_empty(&reg_requests_list)) {
- reg_request = list_first_entry(&reg_requests_list,
- struct regulatory_request,
- list);
- list_del_init(&reg_request->list);
+ if (list_empty(&reg_requests_list)) {
spin_unlock(&reg_requests_lock);
- reg_process_hint(reg_request);
- spin_lock(&reg_requests_lock);
+ goto out;
}
+
+ reg_request = list_first_entry(&reg_requests_list,
+ struct regulatory_request,
+ list);
+ list_del_init(&reg_request->list);
+
spin_unlock(&reg_requests_lock);
+
+ reg_process_hint(reg_request);
+
+out:
+ mutex_unlock(&reg_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(&reg_mutex);
return r;
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