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staging: r8723au: pwrctrl_priv: Replace semaphore lock with mutex

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The semaphore 'lock' in pwrctrl_priv 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>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Binoy Jayan 2016-06-08 13:10:54 +05:30 committed by Greg Kroah-Hartman
parent 1335a9516d
commit 3948506668
3 changed files with 14 additions and 11 deletions
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11
drivers/staging/rtl8723au/core/rtw_pwrctrl.c
View File

@ -14,6 +14,7 @@
******************************************************************************/
#define _RTW_PWRCTRL_C_
#include <linux/mutex.h>
#include <osdep_service.h>
#include <drv_types.h>
#include <osdep_intf.h>
@ -27,7 +28,7 @@ void ips_enter23a(struct rtw_adapter *padapter)
{
struct pwrctrl_priv *pwrpriv = &padapter->pwrctrlpriv;
down(&pwrpriv->lock);
mutex_lock(&pwrpriv->mutex_lock);
pwrpriv->bips_processing = true;
@ -50,7 +51,7 @@ void ips_enter23a(struct rtw_adapter *padapter)
}
pwrpriv->bips_processing = false;
up(&pwrpriv->lock);
mutex_unlock(&pwrpriv->mutex_lock);
}
int ips_leave23a(struct rtw_adapter *padapter)
@ -61,7 +62,7 @@ int ips_leave23a(struct rtw_adapter *padapter)
int result = _SUCCESS;
int keyid;
down(&pwrpriv->lock);
mutex_lock(&pwrpriv->mutex_lock);
if (pwrpriv->rf_pwrstate == rf_off && !pwrpriv->bips_processing) {
pwrpriv->bips_processing = true;
@ -106,7 +107,7 @@ int ips_leave23a(struct rtw_adapter *padapter)
pwrpriv->bpower_saving = false;
}
up(&pwrpriv->lock);
mutex_unlock(&pwrpriv->mutex_lock);
return result;
}
@ -423,7 +424,7 @@ void rtw_init_pwrctrl_priv23a(struct rtw_adapter *padapter)
{
struct pwrctrl_priv *pwrctrlpriv = &padapter->pwrctrlpriv;
sema_init(&pwrctrlpriv->lock, 1);
mutex_init(&pwrctrlpriv->mutex_lock);
pwrctrlpriv->rf_pwrstate = rf_on;
pwrctrlpriv->ips_enter23a_cnts = 0;
pwrctrlpriv->ips_leave23a_cnts = 0;

3
drivers/staging/rtl8723au/include/rtw_pwrctrl.h
View File

@ -15,6 +15,7 @@
#ifndef __RTW_PWRCTRL_H_
#define __RTW_PWRCTRL_H_
#include <linux/mutex.h>
#include <osdep_service.h>
#include <drv_types.h>
@ -149,7 +150,7 @@ enum { /* for ips_mode */
};
struct pwrctrl_priv {
struct semaphore lock;
struct mutex mutex_lock;
volatile u8 rpwm; /* requested power state for fw */
volatile u8 cpwm; /* fw current power state. updated when 1.
* read from HCPWM 2. driver lowers power level

11
drivers/staging/rtl8723au/os_dep/usb_intf.c
View File

@ -14,6 +14,7 @@
******************************************************************************/
#define _HCI_INTF_C_
#include <linux/mutex.h>
#include <osdep_service.h>
#include <drv_types.h>
#include <recv_osdep.h>
@ -291,7 +292,7 @@ static int rtw_suspend(struct usb_interface *pusb_intf, pm_message_t message)
rtw_cancel_all_timer23a(padapter);
LeaveAllPowerSaveMode23a(padapter);
down(&pwrpriv->lock);
mutex_lock(&pwrpriv->mutex_lock);
/* padapter->net_closed = true; */
/* s1. */
if (pnetdev) {
@ -321,7 +322,7 @@ static int rtw_suspend(struct usb_interface *pusb_intf, pm_message_t message)
rtw_free_network_queue23a(padapter);
rtw_dev_unload(padapter);
up(&pwrpriv->lock);
mutex_unlock(&pwrpriv->mutex_lock);
if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY))
rtw_cfg80211_indicate_scan_done(
@ -353,20 +354,20 @@ static int rtw_resume(struct usb_interface *pusb_intf)
pnetdev = padapter->pnetdev;
pwrpriv = &padapter->pwrctrlpriv;
down(&pwrpriv->lock);
mutex_lock(&pwrpriv->mutex_lock);
rtw_reset_drv_sw23a(padapter);
pwrpriv->bkeepfwalive = false;
DBG_8723A("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
if (pm_netdev_open23a(pnetdev, true) != 0) {
up(&pwrpriv->lock);
mutex_unlock(&pwrpriv->mutex_lock);
goto exit;
}
netif_device_attach(pnetdev);
netif_carrier_on(pnetdev);
up(&pwrpriv->lock);
mutex_unlock(&pwrpriv->mutex_lock);
if (padapter->pid[1] != 0) {
DBG_8723A("pid[1]:%d\n", padapter->pid[1]);