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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull timer fixes from Ingo Molnar:
 "Three clocksource driver fixes"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/vt8500: Increase the minimum delta
  clocksource/drivers/fsl_ftm_timer: Fix CLKSRC_MMIO dependency
  clocksource/drivers: Fix dependencies for !HAS_IOMEM archs
This commit is contained in:
Linus Torvalds 2016-01-14 11:45:56 -08:00
parent 747a9b0a08 1f16f116b0
commit dcd1bfd50a
2 changed files with 12 additions and 7 deletions
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13
drivers/clocksource/Kconfig
View File

@ -152,7 +152,7 @@ config CLKSRC_EFM32
config CLKSRC_LPC32XX
bool "Clocksource for LPC32XX" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
select CLKSRC_MMIO
select CLKSRC_OF
help
@ -160,6 +160,7 @@ config CLKSRC_LPC32XX
config CLKSRC_PISTACHIO
bool "Clocksource for Pistachio SoC" if COMPILE_TEST
depends on HAS_IOMEM
select CLKSRC_OF
help
Enables the clocksource for the Pistachio SoC.
@ -256,6 +257,7 @@ config CLKSRC_SAMSUNG_PWM
config FSL_FTM_TIMER
bool "Freescale FlexTimer Module driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
select CLKSRC_MMIO
help
Support for Freescale FlexTimer Module (FTM) timer.
@ -269,7 +271,7 @@ config SYS_SUPPORTS_SH_CMT
config MTK_TIMER
bool "Mediatek timer driver" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
select CLKSRC_OF
select CLKSRC_MMIO
help
@ -365,20 +367,20 @@ config CLKSRC_PXA
config H8300_TMR8
bool "Clockevent timer for the H8300 platform" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
help
This enables the 8 bits timer for the H8300 platform.
config H8300_TMR16
bool "Clockevent timer for the H83069 platform" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
help
This enables the 16 bits timer for the H8300 platform with the
H83069 cpu.
config H8300_TPU
bool "Clocksource for the H8300 platform" if COMPILE_TEST
depends on GENERIC_CLOCKEVENTS
depends on GENERIC_CLOCKEVENTS && HAS_IOMEM
help
This enables the clocksource for the H8300 platform with the
H8S2678 cpu.
@ -391,6 +393,7 @@ config CLKSRC_IMX_GPT
config CLKSRC_ST_LPC
bool "Low power clocksource found in the LPC" if COMPILE_TEST
select CLKSRC_OF if OF
depends on HAS_IOMEM
help
Enable this option to use the Low Power controller timer
as clocksource.

6
drivers/clocksource/vt8500_timer.c
View File

@ -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);