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rtlwifi: Fix use of mutex in interrupt code

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A previous conversion from semaphoreto mutexes missed the fact that one
of the semaphores was used in interrupt code. Fixed by changing to
a spinlock.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2010-12-17 19:36:25 -06:00 committed by John W. Linville
parent f0b3e4b730
commit d704300fa5
3 changed files with 6 additions and 5 deletions
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2
drivers/net/wireless/rtlwifi/base.c
View File

@ -309,8 +309,8 @@ int rtl_init_core(struct ieee80211_hw *hw)
} }
/* <4> locks */ /* <4> locks */
mutex_init(&rtlpriv->locks.ips_mutex);
mutex_init(&rtlpriv->locks.conf_mutex); mutex_init(&rtlpriv->locks.conf_mutex);
spin_lock_init(&rtlpriv->locks.ips_lock);
spin_lock_init(&rtlpriv->locks.irq_th_lock); spin_lock_init(&rtlpriv->locks.irq_th_lock);
spin_lock_init(&rtlpriv->locks.h2c_lock); spin_lock_init(&rtlpriv->locks.h2c_lock);
spin_lock_init(&rtlpriv->locks.rf_ps_lock); spin_lock_init(&rtlpriv->locks.rf_ps_lock);

5
drivers/net/wireless/rtlwifi/ps.c
View File

@ -286,8 +286,9 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw)
struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
enum rf_pwrstate rtstate; enum rf_pwrstate rtstate;
unsigned long flags;
mutex_lock(&rtlpriv->locks.ips_mutex); spin_lock_irqsave(&rtlpriv->locks.ips_lock, flags);
if (ppsc->b_inactiveps) { if (ppsc->b_inactiveps) {
rtstate = ppsc->rfpwr_state; rtstate = ppsc->rfpwr_state;
@ -303,7 +304,7 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw)
} }
} }
mutex_unlock(&rtlpriv->locks.ips_mutex); spin_unlock_irqrestore(&rtlpriv->locks.ips_lock, flags);
} }
/*for FW LPS*/ /*for FW LPS*/

4
drivers/net/wireless/rtlwifi/wifi.h
View File

@ -1192,11 +1192,11 @@ struct rtl_hal_cfg {
}; };
struct rtl_locks { struct rtl_locks {
/*sem */ /* mutex */
struct mutex ips_mutex;
struct mutex conf_mutex; struct mutex conf_mutex;
/*spin lock */ /*spin lock */
spinlock_t ips_lock;
spinlock_t irq_th_lock; spinlock_t irq_th_lock;
spinlock_t h2c_lock; spinlock_t h2c_lock;
spinlock_t rf_ps_lock; spinlock_t rf_ps_lock;