clocksource/drivers/h8300_timer8: Remove irq and lock legacy code

The time framawork takes care of disabling the interrupts and takes a lock
to prevent races.

Remove the legacy code in the driver taking care of the races.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

diff --git a/drivers/clocksource/h8300_timer8.c b/drivers/clocksource/h8300_timer8.c
index 7111b99be6d5f2563534f20833492e35162e8ab6..24d91b1a5d5cc62fa9b3bdf9728fbd7a881ab832 100644 (file)
--- a/drivers/clocksource/h8300_timer8.c
+++ b/drivers/clocksource/h8300_timer8.c
@@ -31,7 +31,6 @@
 struct timer8_priv {
        struct clock_event_device ced;
        unsigned long mapbase;
-       raw_spinlock_t lock;
        unsigned long flags;
        unsigned int rate;
        unsigned int tcora;
@@ -78,10 +77,8 @@ static irqreturn_t timer8_interrupt(int irq, void *dev_id)
 
 static void timer8_set_next(struct timer8_priv *p, unsigned long delta)
 {
-       unsigned long flags;
        unsigned long now;
 
-       raw_spin_lock_irqsave(&p->lock, flags);
        if (delta >= 0x10000)
                pr_warn("delta out of range\n");
        now = timer8_get_counter(p);
@@ -91,8 +88,6 @@ static void timer8_set_next(struct timer8_priv *p, unsigned long delta)
                ctrl_outw(delta, p->mapbase + TCORA);
        else
                ctrl_outw(now + 1, p->mapbase + TCORA);
-
-       raw_spin_unlock_irqrestore(&p->lock, flags);
 }
 
 static int timer8_enable(struct timer8_priv *p)
@@ -108,9 +103,6 @@ static int timer8_enable(struct timer8_priv *p)
 static int timer8_start(struct timer8_priv *p)
 {
        int ret = 0;
-       unsigned long flags;
-
-       raw_spin_lock_irqsave(&p->lock, flags);
 
        if (!(p->flags & FLAG_STARTED))
                ret = timer8_enable(p);
@@ -120,20 +112,12 @@ static int timer8_start(struct timer8_priv *p)
        p->flags |= FLAG_STARTED;
 
  out:
-       raw_spin_unlock_irqrestore(&p->lock, flags);
-
        return ret;
 }
 
 static void timer8_stop(struct timer8_priv *p)
 {
-       unsigned long flags;
-
-       raw_spin_lock_irqsave(&p->lock, flags);
-
        ctrl_outw(0x0000, p->mapbase + _8TCR);
-
-       raw_spin_unlock_irqrestore(&p->lock, flags);
 }
 
 static inline struct timer8_priv *ced_to_priv(struct clock_event_device *ced)