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staging: rtl8192e: Use single spinlock in MgntActSet_RF_State 

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Mike McCormack 2011-03-03 22:41:02 +09:00 committed by Greg Kroah-Hartman
parent 0903602e2c
commit 09f143791c
3 changed files with 2 additions and 64 deletions
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41
drivers/staging/rtl8192e/r8190_rtl8256.c
View File

@ -638,45 +638,10 @@ MgntActSet_RF_State(
bool bActionAllowed = false;
bool bConnectBySSID = false;
RT_RF_POWER_STATE rtState;
u16 RFWaitCounter = 0;
RT_TRACE(COMP_POWER, "===>MgntActSet_RF_State(): StateToSet(%d)\n",StateToSet);
//1//
//1//<1>Prevent the race condition of RF state change.
//1//
// Only one thread can change the RF state at one time, and others should wait to be executed. By Bruce, 2007-11-28.
while(true)
{
spin_lock(&priv->rf_ps_lock);
if(priv->RFChangeInProgress)
{
spin_unlock(&priv->rf_ps_lock);
RT_TRACE(COMP_POWER, "MgntActSet_RF_State(): RF Change in progress! Wait to set..StateToSet(%d).\n", StateToSet);
// Set RF after the previous action is done.
while(priv->RFChangeInProgress)
{
RFWaitCounter ++;
RT_TRACE(COMP_POWER, "MgntActSet_RF_State(): Wait 1 ms (%d times)...\n", RFWaitCounter);
udelay(1000); // 1 ms
// Wait too long, return FALSE to avoid to be stuck here.
if(RFWaitCounter > 100)
{
RT_TRACE(COMP_ERR, "MgntActSet_RF_State(): Wait too logn to set RF\n");
// TODO: Reset RF state?
return false;
}
}
}
else
{
priv->RFChangeInProgress = true;
spin_unlock(&priv->rf_ps_lock);
break;
}
}
spin_lock(&priv->rf_ps_lock);
rtState = priv->ieee80211->eRFPowerState;
@ -731,8 +696,6 @@ MgntActSet_RF_State(
}
// Release RF spinlock
spin_lock(&priv->rf_ps_lock);
priv->RFChangeInProgress = false;
spin_unlock(&priv->rf_ps_lock);
RT_TRACE(COMP_POWER, "<===MgntActSet_RF_State()\n");

1
drivers/staging/rtl8192e/r8192E.h
View File

@ -1010,7 +1010,6 @@ typedef struct r8192_priv
//by amy for gpio
bool bHwRadioOff;
//by amy for ps
bool RFChangeInProgress; // RF Chnage in progress, by Bruce, 2007-10-30
RT_OP_MODE OpMode;
//by amy for reset_count
u32 reset_count;

24
drivers/staging/rtl8192e/r8192E_core.c
View File

@ -1849,17 +1849,6 @@ static short rtl8192_is_tx_queue_empty(struct net_device *dev)
static void rtl8192_hw_sleep_down(struct net_device *dev)
{
struct r8192_priv *priv = ieee80211_priv(dev);
spin_lock(&priv->rf_ps_lock);
if (priv->RFChangeInProgress) {
spin_unlock(&priv->rf_ps_lock);
RT_TRACE(COMP_RF, "rtl8192_hw_sleep_down(): RF Change in progress!\n");
printk("rtl8192_hw_sleep_down(): RF Change in progress!\n");
return;
}
spin_unlock(&priv->rf_ps_lock);
MgntActSet_RF_State(dev, eRfSleep, RF_CHANGE_BY_PS);
}
@ -1874,18 +1863,6 @@ static void rtl8192_hw_sleep_wq (struct work_struct *work)
static void rtl8192_hw_wakeup(struct net_device* dev)
{
struct r8192_priv *priv = ieee80211_priv(dev);
spin_lock(&priv->rf_ps_lock);
if (priv->RFChangeInProgress) {
spin_unlock(&priv->rf_ps_lock);
RT_TRACE(COMP_RF, "rtl8192_hw_wakeup(): RF Change in progress!\n");
printk("rtl8192_hw_wakeup(): RF Change in progress! schedule wake up task again\n");
queue_delayed_work(priv->ieee80211->wq,&priv->ieee80211->hw_wakeup_wq,MSECS(10));//PowerSave is not supported if kernel version is below 2.6.20
return;
}
spin_unlock(&priv->rf_ps_lock);
MgntActSet_RF_State(dev, eRfOn, RF_CHANGE_BY_PS);
}
@ -1984,7 +1961,6 @@ static void rtl8192_init_priv_variable(struct net_device* dev)
priv->force_reset = false;
//added by amy for power save
priv->ieee80211->RfOffReason = 0;
priv->RFChangeInProgress = false;
priv->bHwRfOffAction = 0;
priv->ieee80211->PowerSaveControl.bInactivePs = true;
priv->ieee80211->PowerSaveControl.bIPSModeBackup = false;