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authorPaul Mundt <lethal@linux-sh.org>2012-05-25 00:36:43 -0400
committerPaul Mundt <lethal@linux-sh.org>2012-06-11 03:01:38 -0400
commit7d0c399fe94d4fe572eadc7405654a282e5df63d (patch)
tree23a1fa5847b4c6eb0624dea4d85557389f76a081 /drivers/clocksource
parentcfaf025112d3856637ff34a767ef785ef5cf2ca9 (diff)
clocksource: sh_cmt: Convert timer lock to raw spinlock.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/clocksource')
-rw-r--r--drivers/clocksource/sh_cmt.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c
index 32fe9ef5cc5c..98b06baafcc6 100644
--- a/drivers/clocksource/sh_cmt.c
+++ b/drivers/clocksource/sh_cmt.c
@@ -48,13 +48,13 @@ struct sh_cmt_priv {
48 unsigned long next_match_value; 48 unsigned long next_match_value;
49 unsigned long max_match_value; 49 unsigned long max_match_value;
50 unsigned long rate; 50 unsigned long rate;
51 spinlock_t lock; 51 raw_spinlock_t lock;
52 struct clock_event_device ced; 52 struct clock_event_device ced;
53 struct clocksource cs; 53 struct clocksource cs;
54 unsigned long total_cycles; 54 unsigned long total_cycles;
55}; 55};
56 56
57static DEFINE_SPINLOCK(sh_cmt_lock); 57static DEFINE_RAW_SPINLOCK(sh_cmt_lock);
58 58
59#define CMSTR -1 /* shared register */ 59#define CMSTR -1 /* shared register */
60#define CMCSR 0 /* channel register */ 60#define CMCSR 0 /* channel register */
@@ -139,7 +139,7 @@ static void sh_cmt_start_stop_ch(struct sh_cmt_priv *p, int start)
139 unsigned long flags, value; 139 unsigned long flags, value;
140 140
141 /* start stop register shared by multiple timer channels */ 141 /* start stop register shared by multiple timer channels */
142 spin_lock_irqsave(&sh_cmt_lock, flags); 142 raw_spin_lock_irqsave(&sh_cmt_lock, flags);
143 value = sh_cmt_read(p, CMSTR); 143 value = sh_cmt_read(p, CMSTR);
144 144
145 if (start) 145 if (start)
@@ -148,7 +148,7 @@ static void sh_cmt_start_stop_ch(struct sh_cmt_priv *p, int start)
148 value &= ~(1 << cfg->timer_bit); 148 value &= ~(1 << cfg->timer_bit);
149 149
150 sh_cmt_write(p, CMSTR, value); 150 sh_cmt_write(p, CMSTR, value);
151 spin_unlock_irqrestore(&sh_cmt_lock, flags); 151 raw_spin_unlock_irqrestore(&sh_cmt_lock, flags);
152} 152}
153 153
154static int sh_cmt_enable(struct sh_cmt_priv *p, unsigned long *rate) 154static 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)
328{ 328{
329 unsigned long flags; 329 unsigned long flags;
330 330
331 spin_lock_irqsave(&p->lock, flags); 331 raw_spin_lock_irqsave(&p->lock, flags);
332 __sh_cmt_set_next(p, delta); 332 __sh_cmt_set_next(p, delta);
333 spin_unlock_irqrestore(&p->lock, flags); 333 raw_spin_unlock_irqrestore(&p->lock, flags);
334} 334}
335 335
336static irqreturn_t sh_cmt_interrupt(int irq, void *dev_id) 336static 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)
385 int ret = 0; 385 int ret = 0;
386 unsigned long flags; 386 unsigned long flags;
387 387
388 spin_lock_irqsave(&p->lock, flags); 388 raw_spin_lock_irqsave(&p->lock, flags);
389 389
390 if (!(p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE))) 390 if (!(p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE)))
391 ret = sh_cmt_enable(p, &p->rate); 391 ret = sh_cmt_enable(p, &p->rate);
@@ -398,7 +398,7 @@ static int sh_cmt_start(struct sh_cmt_priv *p, unsigned long flag)
398 if ((flag == FLAG_CLOCKSOURCE) && (!(p->flags & FLAG_CLOCKEVENT))) 398 if ((flag == FLAG_CLOCKSOURCE) && (!(p->flags & FLAG_CLOCKEVENT)))
399 __sh_cmt_set_next(p, p->max_match_value); 399 __sh_cmt_set_next(p, p->max_match_value);
400 out: 400 out:
401 spin_unlock_irqrestore(&p->lock, flags); 401 raw_spin_unlock_irqrestore(&p->lock, flags);
402 402
403 return ret; 403 return ret;
404} 404}
@@ -408,7 +408,7 @@ static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag)
408 unsigned long flags; 408 unsigned long flags;
409 unsigned long f; 409 unsigned long f;
410 410
411 spin_lock_irqsave(&p->lock, flags); 411 raw_spin_lock_irqsave(&p->lock, flags);
412 412
413 f = p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE); 413 f = p->flags & (FLAG_CLOCKEVENT | FLAG_CLOCKSOURCE);
414 p->flags &= ~flag; 414 p->flags &= ~flag;
@@ -420,7 +420,7 @@ static void sh_cmt_stop(struct sh_cmt_priv *p, unsigned long flag)
420 if ((flag == FLAG_CLOCKEVENT) && (p->flags & FLAG_CLOCKSOURCE)) 420 if ((flag == FLAG_CLOCKEVENT) && (p->flags & FLAG_CLOCKSOURCE))
421 __sh_cmt_set_next(p, p->max_match_value); 421 __sh_cmt_set_next(p, p->max_match_value);
422 422
423 spin_unlock_irqrestore(&p->lock, flags); 423 raw_spin_unlock_irqrestore(&p->lock, flags);
424} 424}
425 425
426static struct sh_cmt_priv *cs_to_sh_cmt(struct clocksource *cs) 426static 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)
435 unsigned long value; 435 unsigned long value;
436 int has_wrapped; 436 int has_wrapped;
437 437
438 spin_lock_irqsave(&p->lock, flags); 438 raw_spin_lock_irqsave(&p->lock, flags);
439 value = p->total_cycles; 439 value = p->total_cycles;
440 raw = sh_cmt_get_counter(p, &has_wrapped); 440 raw = sh_cmt_get_counter(p, &has_wrapped);
441 441
442 if (unlikely(has_wrapped)) 442 if (unlikely(has_wrapped))
443 raw += p->match_value + 1; 443 raw += p->match_value + 1;
444 spin_unlock_irqrestore(&p->lock, flags); 444 raw_spin_unlock_irqrestore(&p->lock, flags);
445 445
446 return value + raw; 446 return value + raw;
447} 447}
@@ -591,7 +591,7 @@ static int sh_cmt_register(struct sh_cmt_priv *p, char *name,
591 p->max_match_value = (1 << p->width) - 1; 591 p->max_match_value = (1 << p->width) - 1;
592 592
593 p->match_value = p->max_match_value; 593 p->match_value = p->max_match_value;
594 spin_lock_init(&p->lock); 594 raw_spin_lock_init(&p->lock);
595 595
596 if (clockevent_rating) 596 if (clockevent_rating)
597 sh_cmt_register_clockevent(p, name, clockevent_rating); 597 sh_cmt_register_clockevent(p, name, clockevent_rating);