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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-04 08:52:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-04 08:52:09 -0800 |
| commit | 1ab231b274ba51a54acebec23c6aded0f3cdf54e (patch) | |
| tree | 2ce15cb4ba9adf3e041eb9d1b26f63292c953094 /drivers | |
| parent | dea4f48a0a301b23c65af8e4fe8ccf360c272fbf (diff) | |
| parent | 0e576acbc1d9600cf2d9b4a141a2554639959d50 (diff) | |
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
- timekeeping: Cure a subtle drift issue on GENERIC_TIME_VSYSCALL_OLD
- nohz: Make CONFIG_NO_HZ=n and nohz=off command line option behave the
same way. Fixes a long standing load accounting wreckage.
- clocksource/ARM: Kconfig update to avoid ARM=n wreckage
- clocksource/ARM: Fixlets for the AT91 and SH clocksource/clockevents
- Trivial documentation update and kzalloc conversion from akpms pile
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off
time: Fix 1ns/tick drift w/ GENERIC_TIME_VSYSCALL_OLD
clocksource: arm_arch_timer: Hide eventstream Kconfig on non-ARM
clocksource: sh_tmu: Add clk_prepare/unprepare support
clocksource: sh_tmu: Release clock when sh_tmu_register() fails
clocksource: sh_mtu2: Add clk_prepare/unprepare support
clocksource: sh_mtu2: Release clock when sh_mtu2_register() fails
ARM: at91: rm9200: switch back to clockevents_config_and_register
tick: Document tick_do_timer_cpu
timer: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)
NOHZ: Check for nohz active instead of nohz enabled
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clocksource/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/clocksource/sh_mtu2.c | 16 | ||||
| -rw-r--r-- | drivers/clocksource/sh_tmu.c | 20 |
3 files changed, 32 insertions, 5 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index bdb953e15d2a..5c07a56962db 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -87,6 +87,7 @@ config ARM_ARCH_TIMER config ARM_ARCH_TIMER_EVTSTREAM bool "Support for ARM architected timer event stream generation" default y if ARM_ARCH_TIMER + depends on ARM_ARCH_TIMER help This option enables support for event stream generation based on the ARM architected timer. It is used for waking up CPUs executing diff --git a/drivers/clocksource/sh_mtu2.c b/drivers/clocksource/sh_mtu2.c index 4aac9ee0d0c0..3cf12834681e 100644 --- a/drivers/clocksource/sh_mtu2.c +++ b/drivers/clocksource/sh_mtu2.c @@ -313,8 +313,20 @@ static int sh_mtu2_setup(struct sh_mtu2_priv *p, struct platform_device *pdev) goto err1; } - return sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), - cfg->clockevent_rating); + ret = clk_prepare(p->clk); + if (ret < 0) + goto err2; + + ret = sh_mtu2_register(p, (char *)dev_name(&p->pdev->dev), + cfg->clockevent_rating); + if (ret < 0) + goto err3; + + return 0; + err3: + clk_unprepare(p->clk); + err2: + clk_put(p->clk); err1: iounmap(p->mapbase); err0: diff --git a/drivers/clocksource/sh_tmu.c b/drivers/clocksource/sh_tmu.c index 78b8dae49628..63557cda0a7d 100644 --- a/drivers/clocksource/sh_tmu.c +++ b/drivers/clocksource/sh_tmu.c @@ -472,12 +472,26 @@ static int sh_tmu_setup(struct sh_tmu_priv *p, struct platform_device *pdev) ret = PTR_ERR(p->clk); goto err1; } + + ret = clk_prepare(p->clk); + if (ret < 0) + goto err2; + p->cs_enabled = false; p->enable_count = 0; - return sh_tmu_register(p, (char *)dev_name(&p->pdev->dev), - cfg->clockevent_rating, - cfg->clocksource_rating); + ret = sh_tmu_register(p, (char *)dev_name(&p->pdev->dev), + cfg->clockevent_rating, + cfg->clocksource_rating); + if (ret < 0) + goto err3; + + return 0; + + err3: + clk_unprepare(p->clk); + err2: + clk_put(p->clk); err1: iounmap(p->mapbase); err0: |