[PATCHv2] clocksource: arch_arm_timer: Fix timecounter initialization
From: Xiubo Li <hidden>
Date: 2014-06-16 05:52:32
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Subsystem:
arm architected timer driver, clocksource, clockevent drivers, the rest · Maintainers:
Mark Rutland, Marc Zyngier, Daniel Lezcano, Thomas Gleixner, Linus Torvalds
The third parameter(u64 start_tstamp) of timecounter_init() should be the start time by ns, not a cycle counter. Here just set it to zero. Cc: Stephen Boyd <redacted> Signed-off-by: Xiubo Li <redacted> --- drivers/clocksource/arm_arch_timer.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 5163ec1..b29a810 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c@@ -426,19 +426,16 @@ struct timecounter *arch_timer_get_timecounter(void) static void __init arch_counter_register(unsigned type) { - u64 start_count; - /* Register the CP15 based counter if we have one */ if (type & ARCH_CP15_TIMER) arch_timer_read_counter = arch_counter_get_cntvct; else arch_timer_read_counter = arch_counter_get_cntvct_mem; - start_count = arch_timer_read_counter(); clocksource_register_hz(&clocksource_counter, arch_timer_rate); cyclecounter.mult = clocksource_counter.mult; cyclecounter.shift = clocksource_counter.shift; - timecounter_init(&timecounter, &cyclecounter, start_count); + timecounter_init(&timecounter, &cyclecounter, 0); /* 56 bits minimum, so we assume worst case rollover */ sched_clock_register(arch_timer_read_counter, 56, arch_timer_rate);
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1.8.5