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