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clocksource: sh_cmt: Convert timer lock to raw spinlock. 

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
hifive-unleashed-5.1
Paul Mundt 2012-05-25 13:36:43 +09:00
parent cfaf025112
commit 7d0c399fe9
1 changed files with 13 additions and 13 deletions
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26
drivers/clocksource/sh_cmt.c
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@ -48,13 +48,13 @@ struct sh_cmt_priv {
unsigned long next_match_value;
unsigned long max_match_value;
unsigned long rate;
spinlock_t lock;
raw_spinlock_t lock;
struct clock_event_device ced;
struct clocksource cs;
unsigned long total_cycles;
};
static DEFINE_SPINLOCK(sh_cmt_lock);
static DEFINE_RAW_SPINLOCK(sh_cmt_lock);
#define CMSTR -1 /* shared register */
#define CMCSR 0 /* channel register */
@ -139,7 +139,7 @@ static void sh_cmt_start_stop_ch(struct sh_cmt_priv *p, int start)
unsigned long flags, value;
/* start stop register shared by multiple timer channels */
spin_lock_irqsave(&sh_cmt_lock, flags);
raw_spin_lock_irqsave(&sh_cmt_lock, flags);
value = sh_cmt_read(p, CMSTR);
if (start)
@ -148,7 +148,7 @@ static void sh_cmt_start_stop_ch(struct sh_cmt_priv *p, int start)
value &= ~(1 << cfg->timer_bit);
sh_cmt_write(p, CMSTR, value);
spin_unlock_irqrestore(&sh_cmt_lock, flags);
raw_spin_unlock_irqrestore(&sh_cmt_lock, flags);
}
static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate)
@ -328,9 +328,9 @@ static void sh_cmt_set_next(struct sh_cmt_priv *p, unsigned long delta)
{
unsigned long flags;
spin_lock_irqsave(&p->lock, flags);
raw_spin_lock_irqsave(&p->lock, flags);
__sh_cmt_set_next(p, delta);
spin_unlock_irqrestore(&p->lock, flags);
raw_spin_unlock_irqrestore(&p->lock, flags);
}
static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id)
@ -385,7 +385,7 @@ static int sh_cmt_start(struct sh_cmt_priv *p, unsigned long flag)
int ret = 0;
unsigned long flags;
spin_lock_irqsave(&p->lock, flags);
raw_spin_lock_irqsave(&p->lock, flags);
if (!(p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
ret = sh_cmt_enable(p, &p->rate);
@ -398,7 +398,7 @@ static int sh_cmt_start(struct sh_cmt_priv *p, unsigned long flag)
if ((flag == FLAG_CLOCKSOURCE) && (!(p->flags & FLAG_CLOCKEVENT)))
__sh_cmt_set_next(p, p->max_match_value);
out:
spin_unlock_irqrestore(&p->lock, flags);
raw_spin_unlock_irqrestore(&p->lock, flags);
return ret;
}
@ -408,7 +408,7 @@ static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag)
unsigned long flags;
unsigned long f;
spin_lock_irqsave(&p->lock, flags);
raw_spin_lock_irqsave(&p->lock, flags);
f = p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE);
p->flags &= ~flag;
@ -420,7 +420,7 @@ static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag)
if ((flag == FLAG_CLOCKEVENT) && (p->flags & FLAG_CLOCKSOURCE))
__sh_cmt_set_next(p, p->max_match_value);
spin_unlock_irqrestore(&p->lock, flags);
raw_spin_unlock_irqrestore(&p->lock, flags);
}
static struct sh_cmt_priv *cs_to_sh_cmt(struct clocksource *cs)
@ -435,13 +435,13 @@ static cycle_t sh_cmt_clocksource_read(struct clocksource *cs)
unsigned long value;
int has_wrapped;
spin_lock_irqsave(&p->lock, flags);
raw_spin_lock_irqsave(&p->lock, flags);
value = p->total_cycles;
raw = sh_cmt_get_counter(p, &has_wrapped);
if (unlikely(has_wrapped))
raw += p->match_value + 1;
spin_unlock_irqrestore(&p->lock, flags);
raw_spin_unlock_irqrestore(&p->lock, flags);
return value + raw;
}
@ -591,7 +591,7 @@ static int sh_cmt_register(struct sh_cmt_priv *p, char *name,
p->max_match_value = (1 << p->width) - 1;
p->match_value = p->max_match_value;
spin_lock_init(&p->lock);
raw_spin_lock_init(&p->lock);
if (clockevent_rating)
sh_cmt_register_clockevent(p, name, clockevent_rating);