rtl8192e: Replace semaphore scan_sem with mutex

The semaphore 'scan_sem' in the rtl8192e is a simple mutex, so it should
be written as one. Semaphores are going away in the future.

Signed-off-by: Binoy Jayan <binoy.jayan@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
index 513dd61..5bdc378 100644 (file)
--- a/drivers/staging/rtl8192e/rtllib.h
+++ b/drivers/staging/rtl8192e/rtllib.h
@@ -1653,7 +1653,7 @@ struct rtllib_device {
        short proto_stoppping;
 
        struct mutex wx_mutex;
-       struct semaphore scan_sem;
+       struct mutex scan_mutex;
        struct semaphore ips_sem;
 
        spinlock_t mgmt_tx_lock;

diff --git a/drivers/staging/rtl8192e/rtllib_softmac.c b/drivers/staging/rtl8192e/rtllib_softmac.c
index 901cc50..858eae2 100644 (file)
--- a/drivers/staging/rtl8192e/rtllib_softmac.c
+++ b/drivers/staging/rtl8192e/rtllib_softmac.c
@@ -513,7 +513,7 @@ static void rtllib_softmac_scan_syncro(struct rtllib_device *ieee, u8 is_mesh)
 
        ieee->be_scan_inprogress = true;
 
-       down(&ieee->scan_sem);
+       mutex_lock(&ieee->scan_mutex);
 
        while (1) {
                do {
@@ -566,7 +566,7 @@ out:
                if (IS_DOT11D_ENABLE(ieee))
                        DOT11D_ScanComplete(ieee);
        }
-       up(&ieee->scan_sem);
+       mutex_unlock(&ieee->scan_mutex);
 
        ieee->be_scan_inprogress = false;
 
@@ -587,7 +587,7 @@ static void rtllib_softmac_scan_wq(void *data)
        if (rtllib_act_scanning(ieee, true))
                return;
 
-       down(&ieee->scan_sem);
+       mutex_lock(&ieee->scan_mutex);
 
        if (ieee->eRFPowerState == eRfOff) {
                netdev_info(ieee->dev,
@@ -618,7 +618,7 @@ static void rtllib_softmac_scan_wq(void *data)
        schedule_delayed_work(&ieee->softmac_scan_wq,
                              msecs_to_jiffies(RTLLIB_SOFTMAC_SCAN_TIME));
 
-       up(&ieee->scan_sem);
+       mutex_unlock(&ieee->scan_mutex);
        return;
 
 out:
@@ -630,7 +630,7 @@ out1:
        ieee->actscanning = false;
        ieee->scan_watch_dog = 0;
        ieee->scanning_continue = 0;
-       up(&ieee->scan_sem);
+       mutex_unlock(&ieee->scan_mutex);
 }
 
 
@@ -683,7 +683,7 @@ EXPORT_SYMBOL(rtllib_start_send_beacons);
 
 static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
 {
-       down(&ieee->scan_sem);
+       mutex_lock(&ieee->scan_mutex);
        ieee->scan_watch_dog = 0;
        if (ieee->scanning_continue == 1) {
                ieee->scanning_continue = 0;
@@ -692,7 +692,7 @@ static void rtllib_softmac_stop_scan(struct rtllib_device *ieee)
                cancel_delayed_work_sync(&ieee->softmac_scan_wq);
        }
 
-       up(&ieee->scan_sem);
+       mutex_unlock(&ieee->scan_mutex);
 }
 
 void rtllib_stop_scan(struct rtllib_device *ieee)
@@ -3035,7 +3035,7 @@ void rtllib_softmac_init(struct rtllib_device *ieee)
                      ieee);
 
        mutex_init(&ieee->wx_mutex);
-       sema_init(&ieee->scan_sem, 1);
+       mutex_init(&ieee->scan_mutex);
        sema_init(&ieee->ips_sem, 1);
 
        spin_lock_init(&ieee->mgmt_tx_lock);