diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-20 14:28:02 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-12-20 15:09:16 +0000 |
| commit | 10034aabca9032246762daaca3152f3e79380ea0 (patch) | |
| tree | 32c0143b054ab6c5beeeb9726eaf86b87f2abd80 /arch/arm/kernel/smp_twd.c | |
| parent | e3d9c625f5e4158014e041f492b46e38ad10987e (diff) | |
ARM: localtimer: clean up local timer on hot unplug
When a CPU is hot unplugged, the generic tick code cleans up the
clock event device, but fails to call down to the device's set_mode
function to actually shut the device down.
To work around this, we've historically had a local_timer_stop()
callback out of the hotplug code. However, this adds needless
complexity when we have the clock event device itself available.
Explicitly call the clock event device's set_mode function with
CLOCK_EVT_MODE_UNUSED, so that the hardware can be cleanly shutdown
without any special external callbacks. When/if the generic code
is fixed, percpu_timer_stop() can be killed off.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/smp_twd.c')
| -rw-r--r-- | arch/arm/kernel/smp_twd.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 35882fbf37f..24585d97c10 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -150,13 +150,3 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk) clockevents_register_device(clk); } - -#ifdef CONFIG_HOTPLUG_CPU -/* - * take a local timer down - */ -void twd_timer_stop(void) -{ - __raw_writel(0, twd_base + TWD_TIMER_CONTROL); -} -#endif |