staging: rtl8192e: Use spin_lock, just one exit path

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/rtl8192e/r8192E_core.c b/drivers/staging/rtl8192e/r8192E_core.c
index 4f19ac4..29c36c4 100644 (file)
--- a/drivers/staging/rtl8192e/r8192E_core.c
+++ b/drivers/staging/rtl8192e/r8192E_core.c
@@ -1977,11 +1977,10 @@ void rtl8192_hw_wakeup_wq (struct work_struct *work)
 static void rtl8192_hw_to_sleep(struct net_device *dev, u32 th, u32 tl)
 {
        struct r8192_priv *priv = ieee80211_priv(dev);
-
+       u32 tmp;
        u32 rb = jiffies;
-       unsigned long flags;
 
-       spin_lock_irqsave(&priv->ps_lock,flags);
+       spin_lock(&priv->ps_lock);
 
        // Writing HW register with 0 equals to disable
        // the timer, that is not really what we want
@@ -1994,28 +1993,25 @@ static void rtl8192_hw_to_sleep(struct net_device *dev, u32 th, u32 tl)
        //
        if(((tl>=rb)&& (tl-rb) <= MSECS(MIN_SLEEP_TIME))
                        ||((rb>tl)&& (rb-tl) < MSECS(MIN_SLEEP_TIME))) {
-               spin_unlock_irqrestore(&priv->ps_lock,flags);
                printk("too short to sleep::%x, %x, %lx\n",tl, rb,  MSECS(MIN_SLEEP_TIME));
-               return;
+               goto out_unlock;
        }
 
        if(((tl > rb) && ((tl-rb) > MSECS(MAX_SLEEP_TIME)))||
                        ((tl < rb) && (tl>MSECS(69)) && ((rb-tl) > MSECS(MAX_SLEEP_TIME)))||
                        ((tl<rb)&&(tl<MSECS(69))&&((tl+0xffffffff-rb)>MSECS(MAX_SLEEP_TIME)))) {
                printk("========>too long to sleep:%x, %x, %lx\n", tl, rb,  MSECS(MAX_SLEEP_TIME));
-               spin_unlock_irqrestore(&priv->ps_lock,flags);
-               return;
-       }
-       {
-               u32 tmp = (tl>rb)?(tl-rb):(rb-tl);
-               queue_delayed_work(priv->ieee80211->wq,
-                               &priv->ieee80211->hw_wakeup_wq,tmp);
-               //PowerSave not supported when kernel version less 2.6.20
+               goto out_unlock;
        }
+
+       tmp = (tl>rb)?(tl-rb):(rb-tl);
        queue_delayed_work(priv->ieee80211->wq,
-                       (void *)&priv->ieee80211->hw_sleep_wq,0);
-       spin_unlock_irqrestore(&priv->ps_lock,flags);
+                          &priv->ieee80211->hw_wakeup_wq,tmp);
 
+       queue_delayed_work(priv->ieee80211->wq,
+                       (void *)&priv->ieee80211->hw_sleep_wq,0);
+out_unlock:
+       spin_unlock(&priv->ps_lock);
 }
 
 static void rtl8192_init_priv_variable(struct net_device* dev)