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Commit f5d88fa3 authored by Gregory Greenman's avatar Gregory Greenman Committed by Johannes Berg
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iwlwifi: mvm: replace RS mutex with a spin_lock 

The solution with the worker still had a bug, as in order
to get sta, rcu_read_lock should be used and thus no mutex
can be used inside iwl_mvm_rs_rate_init.

Also, spin_lock is a simpler solution, no need to spawn a
dedicated worker.
Signed-off-by: default avatarGregory Greenman <gregory.greenman@intel.com>
Signed-off-by: default avatarLuca Coelho <luciano.coelho@intel.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent cd4d6b0b
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Showing with 258 additions and 285 deletions
drivers/net/wireless/intel/iwlwifi/mvm/rs.c
View file @ f5d88fa3
......@@ -1197,278 +1197,6 @@ static u8 rs_get_tid(struct ieee80211_hdr *hdr)
return tid;
}
void iwl_mvm_rs_init_wk(struct work_struct *wk)
{
struct iwl_mvm_sta *mvmsta = container_of(wk, struct iwl_mvm_sta,
rs_init_wk);
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
struct ieee80211_sta *sta;
rcu_read_lock();
sta = rcu_dereference(mvmvif->mvm->fw_id_to_mac_id[mvmsta->sta_id]);
if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {
rcu_read_unlock();
return;
}
iwl_mvm_rs_rate_init(mvmvif->mvm, sta, mvmvif->phy_ctxt->channel->band,
true);
rcu_read_unlock();
}
static void __iwl_mvm_rs_tx_status(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
int tid, struct ieee80211_tx_info *info,
bool ndp)
{
int legacy_success;
int retries;
int i;
struct iwl_lq_cmd *table;
u32 lq_hwrate;
struct rs_rate lq_rate, tx_resp_rate;
struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
u32 tlc_info = (uintptr_t)info->status.status_driver_data[0];
u8 reduced_txp = tlc_info & RS_DRV_DATA_TXP_MSK;
u8 lq_color = RS_DRV_DATA_LQ_COLOR_GET(tlc_info);
u32 tx_resp_hwrate = (uintptr_t)info->status.status_driver_data[1];
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta.rs_drv;
/* Treat uninitialized rate scaling data same as non-existing. */
if (!lq_sta) {
IWL_DEBUG_RATE(mvm, "Station rate scaling not created yet.\n");
return;
} else if (!lq_sta->pers.drv) {
IWL_DEBUG_RATE(mvm, "Rate scaling not initialized yet.\n");
return;
}
/* This packet was aggregated but doesn't carry status info */
if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
!(info->flags & IEEE80211_TX_STAT_AMPDU))
return;
if (rs_rate_from_ucode_rate(tx_resp_hwrate, info->band,
&tx_resp_rate)) {
WARN_ON_ONCE(1);
return;
}
#ifdef CONFIG_MAC80211_DEBUGFS
/* Disable last tx check if we are debugging with fixed rate but
* update tx stats */
if (lq_sta->pers.dbg_fixed_rate) {
int index = tx_resp_rate.index;
enum rs_column column;
int attempts, success;
column = rs_get_column_from_rate(&tx_resp_rate);
if (WARN_ONCE(column == RS_COLUMN_INVALID,
"Can't map rate 0x%x to column",
tx_resp_hwrate))
return;
if (info->flags & IEEE80211_TX_STAT_AMPDU) {
attempts = info->status.ampdu_len;
success = info->status.ampdu_ack_len;
} else {
attempts = info->status.rates[0].count;
success = !!(info->flags & IEEE80211_TX_STAT_ACK);
}
lq_sta->pers.tx_stats[column][index].total += attempts;
lq_sta->pers.tx_stats[column][index].success += success;
IWL_DEBUG_RATE(mvm, "Fixed rate 0x%x success %d attempts %d\n",
tx_resp_hwrate, success, attempts);
return;
}
#endif
if (time_after(jiffies,
(unsigned long)(lq_sta->last_tx +
(IWL_MVM_RS_IDLE_TIMEOUT * HZ)))) {
IWL_DEBUG_RATE(mvm, "Tx idle for too long. reinit rs\n");
schedule_work(&mvmsta->rs_init_wk);
return;
}
lq_sta->last_tx = jiffies;
/* Ignore this Tx frame response if its initial rate doesn't match
* that of latest Link Quality command. There may be stragglers
* from a previous Link Quality command, but we're no longer interested
* in those; they're either from the "active" mode while we're trying
* to check "search" mode, or a prior "search" mode after we've moved
* to a new "search" mode (which might become the new "active" mode).
*/
table = &lq_sta->lq;
lq_hwrate = le32_to_cpu(table->rs_table[0]);
if (rs_rate_from_ucode_rate(lq_hwrate, info->band, &lq_rate)) {
WARN_ON_ONCE(1);
return;
}
/* Here we actually compare this rate to the latest LQ command */
if (lq_color != LQ_FLAG_COLOR_GET(table->flags)) {
IWL_DEBUG_RATE(mvm,
"tx resp color 0x%x does not match 0x%x\n",
lq_color, LQ_FLAG_COLOR_GET(table->flags));
/*
* Since rates mis-match, the last LQ command may have failed.
* After IWL_MISSED_RATE_MAX mis-matches, resync the uCode with
* ... driver.
*/
lq_sta->missed_rate_counter++;
if (lq_sta->missed_rate_counter > IWL_MVM_RS_MISSED_RATE_MAX) {
lq_sta->missed_rate_counter = 0;
IWL_DEBUG_RATE(mvm,
"Too many rates mismatch. Send sync LQ. rs_state %d\n",
lq_sta->rs_state);
iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
}
/* Regardless, ignore this status info for outdated rate */
return;
} else
/* Rate did match, so reset the missed_rate_counter */
lq_sta->missed_rate_counter = 0;
if (!lq_sta->search_better_tbl) {
curr_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
other_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
} else {
curr_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
other_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
}
if (WARN_ON_ONCE(!rs_rate_column_match(&lq_rate, &curr_tbl->rate))) {
IWL_DEBUG_RATE(mvm,
"Neither active nor search matches tx rate\n");
tmp_tbl = &(lq_sta->lq_info[lq_sta->active_tbl]);
rs_dump_rate(mvm, &tmp_tbl->rate, "ACTIVE");
tmp_tbl = &(lq_sta->lq_info[1 - lq_sta->active_tbl]);
rs_dump_rate(mvm, &tmp_tbl->rate, "SEARCH");
rs_dump_rate(mvm, &lq_rate, "ACTUAL");
/*
* no matching table found, let's by-pass the data collection
* and continue to perform rate scale to find the rate table
*/
rs_stay_in_table(lq_sta, true);
goto done;
}
/*
* Updating the frame history depends on whether packets were
* aggregated.
*
* For aggregation, all packets were transmitted at the same rate, the
* first index into rate scale table.
*/
if (info->flags & IEEE80211_TX_STAT_AMPDU) {
rs_collect_tpc_data(mvm, lq_sta, curr_tbl, tx_resp_rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len,
reduced_txp);
/* ampdu_ack_len = 0 marks no BA was received. For TLC, treat
* it as a single frame loss as we don't want the success ratio
* to dip too quickly because a BA wasn't received.
* For TPC, there's no need for this optimisation since we want
* to recover very quickly from a bad power reduction and,
* therefore we'd like the success ratio to get an immediate hit
* when failing to get a BA, so we'd switch back to a lower or
* zero power reduction. When FW transmits agg with a rate
* different from the initial rate, it will not use reduced txp
* and will send BA notification twice (one empty with reduced
* txp equal to the value from LQ and one with reduced txp 0).
* We need to update counters for each txp level accordingly.
*/
if (info->status.ampdu_ack_len == 0)
info->status.ampdu_len = 1;
rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl,
tx_resp_rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len);
/* Update success/fail counts if not searching for new mode */
if (lq_sta->rs_state == RS_STATE_STAY_IN_COLUMN) {
lq_sta->total_success += info->status.ampdu_ack_len;
lq_sta->total_failed += (info->status.ampdu_len -
info->status.ampdu_ack_len);
}
} else {
/* For legacy, update frame history with for each Tx retry. */
retries = info->status.rates[0].count - 1;
/* HW doesn't send more than 15 retries */
retries = min(retries, 15);
/* The last transmission may have been successful */
legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK);
/* Collect data for each rate used during failed TX attempts */
for (i = 0; i <= retries; ++i) {
lq_hwrate = le32_to_cpu(table->rs_table[i]);
if (rs_rate_from_ucode_rate(lq_hwrate, info->band,
&lq_rate)) {
WARN_ON_ONCE(1);
return;
}
/*
* Only collect stats if retried rate is in the same RS
* table as active/search.
*/
if (rs_rate_column_match(&lq_rate, &curr_tbl->rate))
tmp_tbl = curr_tbl;
else if (rs_rate_column_match(&lq_rate,
&other_tbl->rate))
tmp_tbl = other_tbl;
else
continue;
rs_collect_tpc_data(mvm, lq_sta, tmp_tbl,
tx_resp_rate.index, 1,
i < retries ? 0 : legacy_success,
reduced_txp);
rs_collect_tlc_data(mvm, mvmsta, tid, tmp_tbl,
tx_resp_rate.index, 1,
i < retries ? 0 : legacy_success);
}
/* Update success/fail counts if not searching for new mode */
if (lq_sta->rs_state == RS_STATE_STAY_IN_COLUMN) {
lq_sta->total_success += legacy_success;
lq_sta->total_failed += retries + (1 - legacy_success);
}
}
/* The last TX rate is cached in lq_sta; it's set in if/else above */
lq_sta->last_rate_n_flags = lq_hwrate;
IWL_DEBUG_RATE(mvm, "reduced txpower: %d\n", reduced_txp);
done:
/* See if there's a better rate or modulation mode to try. */
if (sta->supp_rates[info->band])
rs_rate_scale_perform(mvm, sta, lq_sta, tid, ndp);
}
void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
int tid, struct ieee80211_tx_info *info, bool ndp)
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
/* If it's locked we are in middle of init flow
* just wait for next tx status to update the lq_sta data
*/
if (!mutex_trylock(&mvmsta->lq_sta.rs_drv.mutex))
return;
__iwl_mvm_rs_tx_status(mvm, sta, tid, info, ndp);
mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
}
/*
* mac80211 sends us Tx status
*/
......@@ -3226,6 +2954,8 @@ static void rs_drv_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
struct ieee80211_supported_band *sband;
unsigned long supp; /* must be unsigned long for for_each_set_bit */
lockdep_assert_held(&mvmsta->lq_sta.rs_drv.pers.lock);
/* clear all non-persistent lq data */
memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
......@@ -3318,6 +3048,258 @@ static void rs_drv_rate_update(void *mvm_r,
iwl_mvm_rs_rate_init(mvm, sta, sband->band, true);
}
static void __iwl_mvm_rs_tx_status(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
int tid, struct ieee80211_tx_info *info,
bool ndp)
{
int legacy_success;
int retries;
int i;
struct iwl_lq_cmd *table;
u32 lq_hwrate;
struct rs_rate lq_rate, tx_resp_rate;
struct iwl_scale_tbl_info *curr_tbl, *other_tbl, *tmp_tbl;
u32 tlc_info = (uintptr_t)info->status.status_driver_data[0];
u8 reduced_txp = tlc_info & RS_DRV_DATA_TXP_MSK;
u8 lq_color = RS_DRV_DATA_LQ_COLOR_GET(tlc_info);
u32 tx_resp_hwrate = (uintptr_t)info->status.status_driver_data[1];
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_lq_sta *lq_sta = &mvmsta->lq_sta.rs_drv;
/* Treat uninitialized rate scaling data same as non-existing. */
if (!lq_sta) {
IWL_DEBUG_RATE(mvm, "Station rate scaling not created yet.\n");
return;
} else if (!lq_sta->pers.drv) {
IWL_DEBUG_RATE(mvm, "Rate scaling not initialized yet.\n");
return;
}
/* This packet was aggregated but doesn't carry status info */
if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
!(info->flags & IEEE80211_TX_STAT_AMPDU))
return;
if (rs_rate_from_ucode_rate(tx_resp_hwrate, info->band,
&tx_resp_rate)) {
WARN_ON_ONCE(1);
return;
}
#ifdef CONFIG_MAC80211_DEBUGFS
/* Disable last tx check if we are debugging with fixed rate but
* update tx stats
*/
if (lq_sta->pers.dbg_fixed_rate) {
int index = tx_resp_rate.index;
enum rs_column column;
int attempts, success;
column = rs_get_column_from_rate(&tx_resp_rate);
if (WARN_ONCE(column == RS_COLUMN_INVALID,
"Can't map rate 0x%x to column",
tx_resp_hwrate))
return;
if (info->flags & IEEE80211_TX_STAT_AMPDU) {
attempts = info->status.ampdu_len;
success = info->status.ampdu_ack_len;
} else {
attempts = info->status.rates[0].count;
success = !!(info->flags & IEEE80211_TX_STAT_ACK);
}
lq_sta->pers.tx_stats[column][index].total += attempts;
lq_sta->pers.tx_stats[column][index].success += success;
IWL_DEBUG_RATE(mvm, "Fixed rate 0x%x success %d attempts %d\n",
tx_resp_hwrate, success, attempts);
return;
}
#endif
if (time_after(jiffies,
(unsigned long)(lq_sta->last_tx +
(IWL_MVM_RS_IDLE_TIMEOUT * HZ)))) {
IWL_DEBUG_RATE(mvm, "Tx idle for too long. reinit rs\n");
/* reach here only in case of driver RS, call directly
* the unlocked version
*/
rs_drv_rate_init(mvm, sta, info->band);
return;
}
lq_sta->last_tx = jiffies;
/* Ignore this Tx frame response if its initial rate doesn't match
* that of latest Link Quality command. There may be stragglers
* from a previous Link Quality command, but we're no longer interested
* in those; they're either from the "active" mode while we're trying
* to check "search" mode, or a prior "search" mode after we've moved
* to a new "search" mode (which might become the new "active" mode).
*/
table = &lq_sta->lq;
lq_hwrate = le32_to_cpu(table->rs_table[0]);
if (rs_rate_from_ucode_rate(lq_hwrate, info->band, &lq_rate)) {
WARN_ON_ONCE(1);
return;
}
/* Here we actually compare this rate to the latest LQ command */
if (lq_color != LQ_FLAG_COLOR_GET(table->flags)) {
IWL_DEBUG_RATE(mvm,
"tx resp color 0x%x does not match 0x%x\n",
lq_color, LQ_FLAG_COLOR_GET(table->flags));
/* Since rates mis-match, the last LQ command may have failed.
* After IWL_MISSED_RATE_MAX mis-matches, resync the uCode with
* ... driver.
*/
lq_sta->missed_rate_counter++;
if (lq_sta->missed_rate_counter > IWL_MVM_RS_MISSED_RATE_MAX) {
lq_sta->missed_rate_counter = 0;
IWL_DEBUG_RATE(mvm,
"Too many rates mismatch. Send sync LQ. rs_state %d\n",
lq_sta->rs_state);
iwl_mvm_send_lq_cmd(mvm, &lq_sta->lq);
}
/* Regardless, ignore this status info for outdated rate */
return;
}
/* Rate did match, so reset the missed_rate_counter */
lq_sta->missed_rate_counter = 0;
if (!lq_sta->search_better_tbl) {
curr_tbl = &lq_sta->lq_info[lq_sta->active_tbl];
other_tbl = &lq_sta->lq_info[1 - lq_sta->active_tbl];
} else {
curr_tbl = &lq_sta->lq_info[1 - lq_sta->active_tbl];
other_tbl = &lq_sta->lq_info[lq_sta->active_tbl];
}
if (WARN_ON_ONCE(!rs_rate_column_match(&lq_rate, &curr_tbl->rate))) {
IWL_DEBUG_RATE(mvm,
"Neither active nor search matches tx rate\n");
tmp_tbl = &lq_sta->lq_info[lq_sta->active_tbl];
rs_dump_rate(mvm, &tmp_tbl->rate, "ACTIVE");
tmp_tbl = &lq_sta->lq_info[1 - lq_sta->active_tbl];
rs_dump_rate(mvm, &tmp_tbl->rate, "SEARCH");
rs_dump_rate(mvm, &lq_rate, "ACTUAL");
/* no matching table found, let's by-pass the data collection
* and continue to perform rate scale to find the rate table
*/
rs_stay_in_table(lq_sta, true);
goto done;
}
/* Updating the frame history depends on whether packets were
* aggregated.
*
* For aggregation, all packets were transmitted at the same rate, the
* first index into rate scale table.
*/
if (info->flags & IEEE80211_TX_STAT_AMPDU) {
rs_collect_tpc_data(mvm, lq_sta, curr_tbl, tx_resp_rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len,
reduced_txp);
/* ampdu_ack_len = 0 marks no BA was received. For TLC, treat
* it as a single frame loss as we don't want the success ratio
* to dip too quickly because a BA wasn't received.
* For TPC, there's no need for this optimisation since we want
* to recover very quickly from a bad power reduction and,
* therefore we'd like the success ratio to get an immediate hit
* when failing to get a BA, so we'd switch back to a lower or
* zero power reduction. When FW transmits agg with a rate
* different from the initial rate, it will not use reduced txp
* and will send BA notification twice (one empty with reduced
* txp equal to the value from LQ and one with reduced txp 0).
* We need to update counters for each txp level accordingly.
*/
if (info->status.ampdu_ack_len == 0)
info->status.ampdu_len = 1;
rs_collect_tlc_data(mvm, mvmsta, tid, curr_tbl,
tx_resp_rate.index,
info->status.ampdu_len,
info->status.ampdu_ack_len);
/* Update success/fail counts if not searching for new mode */
if (lq_sta->rs_state == RS_STATE_STAY_IN_COLUMN) {
lq_sta->total_success += info->status.ampdu_ack_len;
lq_sta->total_failed += (info->status.ampdu_len -
info->status.ampdu_ack_len);
}
} else {
/* For legacy, update frame history with for each Tx retry. */
retries = info->status.rates[0].count - 1;
/* HW doesn't send more than 15 retries */
retries = min(retries, 15);
/* The last transmission may have been successful */
legacy_success = !!(info->flags & IEEE80211_TX_STAT_ACK);
/* Collect data for each rate used during failed TX attempts */
for (i = 0; i <= retries; ++i) {
lq_hwrate = le32_to_cpu(table->rs_table[i]);
if (rs_rate_from_ucode_rate(lq_hwrate, info->band,
&lq_rate)) {
WARN_ON_ONCE(1);
return;
}
/* Only collect stats if retried rate is in the same RS
* table as active/search.
*/
if (rs_rate_column_match(&lq_rate, &curr_tbl->rate))
tmp_tbl = curr_tbl;
else if (rs_rate_column_match(&lq_rate,
&other_tbl->rate))
tmp_tbl = other_tbl;
else
continue;
rs_collect_tpc_data(mvm, lq_sta, tmp_tbl,
tx_resp_rate.index, 1,
i < retries ? 0 : legacy_success,
reduced_txp);
rs_collect_tlc_data(mvm, mvmsta, tid, tmp_tbl,
tx_resp_rate.index, 1,
i < retries ? 0 : legacy_success);
}
/* Update success/fail counts if not searching for new mode */
if (lq_sta->rs_state == RS_STATE_STAY_IN_COLUMN) {
lq_sta->total_success += legacy_success;
lq_sta->total_failed += retries + (1 - legacy_success);
}
}
/* The last TX rate is cached in lq_sta; it's set in if/else above */
lq_sta->last_rate_n_flags = lq_hwrate;
IWL_DEBUG_RATE(mvm, "reduced txpower: %d\n", reduced_txp);
done:
/* See if there's a better rate or modulation mode to try. */
if (sta->supp_rates[info->band])
rs_rate_scale_perform(mvm, sta, lq_sta, tid, ndp);
}
void iwl_mvm_rs_tx_status(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
int tid, struct ieee80211_tx_info *info, bool ndp)
{
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
/* If it's locked we are in middle of init flow
* just wait for next tx status to update the lq_sta data
*/
if (!spin_trylock(&mvmsta->lq_sta.rs_drv.pers.lock))
return;
__iwl_mvm_rs_tx_status(mvm, sta, tid, info, ndp);
spin_unlock(&mvmsta->lq_sta.rs_drv.pers.lock);
}
#ifdef CONFIG_MAC80211_DEBUGFS
static void rs_build_rates_table_from_fixed(struct iwl_mvm *mvm,
struct iwl_lq_cmd *lq_cmd,
......@@ -4177,9 +4159,9 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
} else {
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
mutex_lock(&mvmsta->lq_sta.rs_drv.mutex);
spin_lock(&mvmsta->lq_sta.rs_drv.pers.lock);
rs_drv_rate_init(mvm, sta, band);
mutex_unlock(&mvmsta->lq_sta.rs_drv.mutex);
spin_unlock(&mvmsta->lq_sta.rs_drv.pers.lock);
}
}
......
drivers/net/wireless/intel/iwlwifi/mvm/rs.h
View file @ f5d88fa3
......@@ -376,9 +376,6 @@ struct iwl_lq_sta {
/* tx power reduce for this sta */
int tpc_reduce;
/* avoid races of reinit and update table from rx_tx */
struct mutex mutex;
/* persistent fields - initialized only once - keep last! */
struct lq_sta_pers {
#ifdef CONFIG_MAC80211_DEBUGFS
......@@ -393,6 +390,7 @@ struct iwl_lq_sta {
s8 last_rssi;
struct rs_rate_stats tx_stats[RS_COLUMN_COUNT][IWL_RATE_COUNT];
struct iwl_mvm *drv;
spinlock_t lock; /* for races in reinit/update table */
} pers;
};
......@@ -443,8 +441,6 @@ struct iwl_mvm_sta;
int iwl_mvm_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
bool enable);
void iwl_mvm_rs_init_wk(struct work_struct *wk);
#ifdef CONFIG_IWLWIFI_DEBUGFS
void iwl_mvm_reset_frame_stats(struct iwl_mvm *mvm);
#endif
......
drivers/net/wireless/intel/iwlwifi/mvm/sta.c
View file @ f5d88fa3
......@@ -1685,9 +1685,7 @@ int iwl_mvm_add_sta(struct iwl_mvm *mvm,
if (iwl_mvm_has_tlc_offload(mvm))
iwl_mvm_rs_add_sta(mvm, mvm_sta);
else
mutex_init(&mvm_sta->lq_sta.rs_drv.mutex);
INIT_WORK(&mvm_sta->rs_init_wk, iwl_mvm_rs_init_wk);
spin_lock_init(&mvm_sta->lq_sta.rs_drv.pers.lock);
iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);
......@@ -1850,8 +1848,6 @@ int iwl_mvm_rm_sta(struct iwl_mvm *mvm,
if (ret)
return ret;
cancel_work_sync(&mvm_sta->rs_init_wk);
/* flush its queues here since we are freeing mvm_sta */
ret = iwl_mvm_flush_sta(mvm, mvm_sta, false, 0);
if (ret)
......
drivers/net/wireless/intel/iwlwifi/mvm/sta.h
View file @ f5d88fa3
......@@ -432,7 +432,6 @@ struct iwl_mvm_sta {
struct iwl_lq_sta_rs_fw rs_fw;
struct iwl_lq_sta rs_drv;
} lq_sta;
struct work_struct rs_init_wk;
struct ieee80211_vif *vif;
struct iwl_mvm_key_pn __rcu *ptk_pn[4];
struct iwl_mvm_rxq_dup_data *dup_data;
......
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