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Subject[PATCH] clocksource/drivers/arm_global_timer: Always use {readl|writel}_relaxed
Date
This driver use both readl/writel and their relaxed version, this patch
tries to unify the io accesses.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
---
drivers/clocksource/arm_global_timer.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/clocksource/arm_global_timer.c b/drivers/clocksource/arm_global_timer.c
index a2cb6fa..84a5a5d 100644
--- a/drivers/clocksource/arm_global_timer.c
+++ b/drivers/clocksource/arm_global_timer.c
@@ -99,27 +99,27 @@ static void gt_compare_set(unsigned long delta, int periodic)

counter += delta;
ctrl = GT_CONTROL_TIMER_ENABLE;
- writel(ctrl, gt_base + GT_CONTROL);
- writel(lower_32_bits(counter), gt_base + GT_COMP0);
- writel(upper_32_bits(counter), gt_base + GT_COMP1);
+ writel_relaxed(ctrl, gt_base + GT_CONTROL);
+ writel_relaxed(lower_32_bits(counter), gt_base + GT_COMP0);
+ writel_relaxed(upper_32_bits(counter), gt_base + GT_COMP1);

if (periodic) {
- writel(delta, gt_base + GT_AUTO_INC);
+ writel_relaxed(delta, gt_base + GT_AUTO_INC);
ctrl |= GT_CONTROL_AUTO_INC;
}

ctrl |= GT_CONTROL_COMP_ENABLE | GT_CONTROL_IRQ_ENABLE;
- writel(ctrl, gt_base + GT_CONTROL);
+ writel_relaxed(ctrl, gt_base + GT_CONTROL);
}

static int gt_clockevent_shutdown(struct clock_event_device *evt)
{
unsigned long ctrl;

- ctrl = readl(gt_base + GT_CONTROL);
+ ctrl = readl_relaxed(gt_base + GT_CONTROL);
ctrl &= ~(GT_CONTROL_COMP_ENABLE | GT_CONTROL_IRQ_ENABLE |
GT_CONTROL_AUTO_INC);
- writel(ctrl, gt_base + GT_CONTROL);
+ writel_relaxed(ctrl, gt_base + GT_CONTROL);
return 0;
}

@@ -212,11 +212,11 @@ static u64 notrace gt_sched_clock_read(void)

static void __init gt_clocksource_init(void)
{
- writel(0, gt_base + GT_CONTROL);
- writel(0, gt_base + GT_COUNTER0);
- writel(0, gt_base + GT_COUNTER1);
+ writel_relaxed(0, gt_base + GT_CONTROL);
+ writel_relaxed(0, gt_base + GT_COUNTER0);
+ writel_relaxed(0, gt_base + GT_COUNTER1);
/* enables timer on all the cores */
- writel(GT_CONTROL_TIMER_ENABLE, gt_base + GT_CONTROL);
+ writel_relaxed(GT_CONTROL_TIMER_ENABLE, gt_base + GT_CONTROL);

#ifdef CONFIG_CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
sched_clock_register(gt_sched_clock_read, 64, gt_clk_rate);
--
2.6.2


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