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staging: rtl8192e: Modify time handling
In several places, the driver keeps times (in jiffies) in two 32-bit quantities. In the rtl8192_hw_to_sleep(), there is an error in the calculation of the difference between two 64-bit quantities. Rather than fix that error, I have converted to a single 64-bit number. That makes the code be much cleaner and clearer. Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -2244,13 +2244,10 @@ void rtl819x_UpdateRxPktTimeStamp (struct net_device *dev, struct rtllib_rx_stat
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{
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struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
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if (stats->bIsAMPDU && !stats->bFirstMPDU) {
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stats->mac_time[0] = priv->LastRxDescTSFLow;
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stats->mac_time[1] = priv->LastRxDescTSFHigh;
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} else {
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priv->LastRxDescTSFLow = stats->mac_time[0];
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priv->LastRxDescTSFHigh = stats->mac_time[1];
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}
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if (stats->bIsAMPDU && !stats->bFirstMPDU)
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stats->mac_time = priv->LastRxDescTSF;
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else
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priv->LastRxDescTSF = stats->mac_time;
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}
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long rtl819x_translate_todbm(struct r8192_priv * priv, u8 signal_strength_index )
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@ -642,8 +642,7 @@ struct r8192_priv {
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int rxringcount;
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u16 rxbuffersize;
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u32 LastRxDescTSFHigh;
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u32 LastRxDescTSFLow;
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u64 LastRxDescTSF;
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u16 EarlyRxThreshold;
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u32 ReceiveConfig;
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@ -78,36 +78,33 @@ void rtl8192_hw_wakeup_wq(void *data)
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#define MIN_SLEEP_TIME 50
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#define MAX_SLEEP_TIME 10000
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void rtl8192_hw_to_sleep(struct net_device *dev, u32 th, u32 tl)
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void rtl8192_hw_to_sleep(struct net_device *dev, u64 time)
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{
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struct r8192_priv *priv = rtllib_priv(dev);
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u32 rb = jiffies;
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u32 tmp;
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unsigned long flags;
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spin_lock_irqsave(&priv->ps_lock,flags);
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tl -= MSECS(8+16+7);
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time -= MSECS(8+16+7);
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if (((tl>=rb)&& (tl-rb) <= MSECS(MIN_SLEEP_TIME))
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||((rb>tl)&& (rb-tl) < MSECS(MIN_SLEEP_TIME))) {
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if ((time - jiffies) <= MSECS(MIN_SLEEP_TIME)) {
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spin_unlock_irqrestore(&priv->ps_lock,flags);
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printk("too short to sleep::%x, %x, %lx\n",tl, rb, MSECS(MIN_SLEEP_TIME));
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printk(KERN_INFO "too short to sleep::%lld < %ld\n",
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time - jiffies, MSECS(MIN_SLEEP_TIME));
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return;
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}
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if (((tl > rb) && ((tl-rb) > MSECS(MAX_SLEEP_TIME)))||
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((tl < rb) && (tl>MSECS(69)) && ((rb-tl) > MSECS(MAX_SLEEP_TIME)))||
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((tl<rb)&&(tl<MSECS(69))&&((tl+0xffffffff-rb)>MSECS(MAX_SLEEP_TIME)))) {
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printk("========>too long to sleep:%x, %x, %lx\n", tl, rb, MSECS(MAX_SLEEP_TIME));
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if ((time - jiffies) > MSECS(MAX_SLEEP_TIME)) {
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printk(KERN_INFO "========>too long to sleep:%lld > %ld\n",
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time - jiffies, MSECS(MAX_SLEEP_TIME));
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spin_unlock_irqrestore(&priv->ps_lock,flags);
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return;
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}
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{
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u32 tmp = (tl>rb)?(tl-rb):(rb-tl);
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queue_delayed_work_rsl(priv->rtllib->wq,
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&priv->rtllib->hw_wakeup_wq,tmp);
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}
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tmp = time - jiffies;
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queue_delayed_work_rsl(priv->rtllib->wq,
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&priv->rtllib->hw_wakeup_wq,tmp);
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queue_delayed_work_rsl(priv->rtllib->wq,
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(void *)&priv->rtllib->hw_sleep_wq,0);
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spin_unlock_irqrestore(&priv->ps_lock,flags);
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@ -33,7 +33,7 @@ struct net_device;
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#define INIT_DEFAULT_CHAN 1
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void rtl8192_hw_wakeup(struct net_device *dev);
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void rtl8192_hw_to_sleep(struct net_device *dev, u32 th, u32 tl);
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void rtl8192_hw_to_sleep(struct net_device *dev, u64 time);
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void rtllib_ips_leave_wq(struct net_device *dev);
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void rtllib_ips_leave(struct net_device *dev);
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void IPSLeave_wq (void *data);
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@ -993,7 +993,7 @@ struct ieee_ibss_seq {
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* any adverse affects. */
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struct rtllib_rx_stats {
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#if 1
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u32 mac_time[2];
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u64 mac_time;
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s8 rssi;
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u8 signal;
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u8 noise;
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@ -1679,7 +1679,7 @@ struct rtllib_network {
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struct rtllib_tim_parameters tim;
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u8 dtim_period;
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u8 dtim_data;
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u32 last_dtim_sta_time[2];
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u64 last_dtim_sta_time;
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u8 wmm_info;
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struct rtllib_wmm_ac_param wmm_param[4];
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@ -2305,8 +2305,7 @@ struct rtllib_device {
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int ps_timeout;
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int ps_period;
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struct tasklet_struct ps_task;
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u32 ps_th;
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u32 ps_tl;
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u64 ps_time;
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bool polling;
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short raw_tx;
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@ -2498,7 +2497,7 @@ struct rtllib_device {
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/* power save mode related */
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void (*sta_wake_up) (struct net_device *dev);
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void (*enter_sleep_state) (struct net_device *dev, u32 th, u32 tl);
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void (*enter_sleep_state) (struct net_device *dev, u64 time);
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short (*ps_is_queue_empty) (struct net_device *dev);
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int (*handle_beacon) (struct net_device * dev, struct rtllib_beacon * beacon, struct rtllib_network * network);
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int (*handle_assoc_response) (struct net_device * dev, struct rtllib_assoc_response_frame * resp, struct rtllib_network * network);
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@ -1867,8 +1867,7 @@ int rtllib_parse_info_param(struct rtllib_device *ieee,
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network->dtim_period = info_element->data[1];
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if (ieee->state != RTLLIB_LINKED)
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break;
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network->last_dtim_sta_time[0] = jiffies;
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network->last_dtim_sta_time[1] = stats->mac_time[1];
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network->last_dtim_sta_time = jiffies;
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network->dtim_data = RTLLIB_DTIM_VALID;
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@ -2466,8 +2465,7 @@ static inline void update_network(struct rtllib_network *dst,
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dst->atim_window = src->atim_window;
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dst->dtim_period = src->dtim_period;
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dst->dtim_data = src->dtim_data;
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dst->last_dtim_sta_time[0] = src->last_dtim_sta_time[0];
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dst->last_dtim_sta_time[1] = src->last_dtim_sta_time[1];
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dst->last_dtim_sta_time = src->last_dtim_sta_time;
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memcpy(&dst->tim, &src->tim, sizeof(struct rtllib_tim_parameters));
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dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
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@ -2037,7 +2037,7 @@ void rtllib_sta_ps_send_pspoll_frame(struct rtllib_device *ieee)
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}
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short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u32 *time_h, u32 *time_l)
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static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
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{
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int timeout = ieee->ps_timeout;
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u8 dtim;
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@ -2074,7 +2074,7 @@ short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u32 *time_h, u32 *time_l)
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(ieee->mgmt_queue_tail != ieee->mgmt_queue_head))
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return 0;
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if (time_l){
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if (time){
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if (ieee->bAwakePktSent == true) {
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pPSC->LPSAwakeIntvl = 1;
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} else {
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@ -2107,17 +2107,11 @@ short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u32 *time_h, u32 *time_l)
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LPSAwakeIntvl_tmp = pPSC->LPSAwakeIntvl;
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}
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*time_l = ieee->current_network.last_dtim_sta_time[0]
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*time = ieee->current_network.last_dtim_sta_time
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+ MSECS(ieee->current_network.beacon_interval * LPSAwakeIntvl_tmp);
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}
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}
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if (time_h) {
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*time_h = ieee->current_network.last_dtim_sta_time[1];
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if (time_l && *time_l < ieee->current_network.last_dtim_sta_time[0])
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*time_h += 1;
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}
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return 1;
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@ -2126,7 +2120,7 @@ short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u32 *time_h, u32 *time_l)
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inline void rtllib_sta_ps(struct rtllib_device *ieee)
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{
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u32 th,tl;
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u64 time;
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short sleep;
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unsigned long flags,flags2;
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@ -2146,7 +2140,7 @@ inline void rtllib_sta_ps(struct rtllib_device *ieee)
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spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
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}
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sleep = rtllib_sta_ps_sleep(ieee,&th, &tl);
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sleep = rtllib_sta_ps_sleep(ieee, &time);
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/* 2 wake, 1 sleep, 0 do nothing */
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if (sleep == 0)
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{
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@ -2154,7 +2148,7 @@ inline void rtllib_sta_ps(struct rtllib_device *ieee)
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}
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if (sleep == 1){
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if (ieee->sta_sleep == LPS_IS_SLEEP){
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ieee->enter_sleep_state(ieee->dev,th,tl);
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ieee->enter_sleep_state(ieee->dev, time);
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}
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else if (ieee->sta_sleep == LPS_IS_WAKE){
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@ -2164,8 +2158,7 @@ inline void rtllib_sta_ps(struct rtllib_device *ieee)
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ieee->sta_sleep = LPS_WAIT_NULL_DATA_SEND;
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ieee->ack_tx_to_ieee = 1;
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rtllib_sta_ps_send_null_frame(ieee,1);
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ieee->ps_th = th;
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ieee->ps_tl = tl;
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ieee->ps_time = time;
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}
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spin_unlock_irqrestore(&ieee->mgmt_tx_lock, flags2);
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@ -2241,7 +2234,7 @@ void rtllib_ps_tx_ack(struct rtllib_device *ieee, short success)
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/* Null frame with PS bit set */
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if (success){
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ieee->sta_sleep = LPS_IS_SLEEP;
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ieee->enter_sleep_state(ieee->dev,ieee->ps_th,ieee->ps_tl);
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ieee->enter_sleep_state(ieee->dev, ieee->ps_time);
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}
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/* if the card report not success we can't be sure the AP
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* has not RXed so we can't assume the AP believe us awake
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