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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-01-12 13:01:12 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-01-12 13:01:12 +0300 |
| commit | 1f16f116b01c110db20ab808562c8b8bc3ee3d6e (patch) | |
| tree | 44db563f64cf5f8d62af8f99a61e2b248c44ea3a /drivers/clocksource/vt8500_timer.c | |
| parent | 03724ac3d48f8f0e3caf1d30fa134f8fd96c94e2 (diff) | |
| parent | f9eccf24615672896dc13251410c3f2f33a14f95 (diff) | |
| download | linux-1f16f116b01c110db20ab808562c8b8bc3ee3d6e.tar.xz | |
Merge branches 'clockevents/4.4-fixes' and 'clockevents/4.5-fixes' of http://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
Pull in fixes from Daniel Lezcano:
- Fix the vt8500 timer leading to a system lock up when dealing with too
small delta (Roman Volkov)
- Select the CLKSRC_MMIO when the fsl_ftm_timer is enabled with COMPILE_TEST
(Daniel Lezcano)
- Prevent to compile timers using the 'iomem' API when the architecture has
not HAS_IOMEM set (Richard Weinberger)
Diffstat (limited to 'drivers/clocksource/vt8500_timer.c')
| -rw-r--r-- | drivers/clocksource/vt8500_timer.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/clocksource/vt8500_timer.c b/drivers/clocksource/vt8500_timer.c index de49805fbb09..ddb409274f45 100644 --- a/drivers/clocksource/vt8500_timer.c +++ b/drivers/clocksource/vt8500_timer.c @@ -49,6 +49,8 @@ #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) +#define MIN_OSCR_DELTA 16 + static void __iomem *regbase; static cycle_t vt8500_timer_read(struct clocksource *cs) @@ -79,7 +81,7 @@ static int vt8500_timer_set_next_event(unsigned long cycles, cpu_relax(); writel((unsigned long)alarm, regbase + TIMER_MATCH_VAL); - if ((signed)(alarm - clocksource.read(&clocksource)) <= 16) + if ((signed)(alarm - clocksource.read(&clocksource)) <= MIN_OSCR_DELTA) return -ETIME; writel(1, regbase + TIMER_IER_VAL); @@ -150,7 +152,7 @@ static void __init vt8500_timer_init(struct device_node *np) pr_err("%s: setup_irq failed for %s\n", __func__, clockevent.name); clockevents_config_and_register(&clockevent, VT8500_TIMER_HZ, - 4, 0xf0000000); + MIN_OSCR_DELTA * 2, 0xf0000000); } CLOCKSOURCE_OF_DECLARE(vt8500, "via,vt8500-timer", vt8500_timer_init); |