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cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}

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The function arm_enter_idle_state is exactly the same in both generic
ARM{32,64} CPUIdle driver and will be the same even on ARM64 backend
for ACPI processor idle driver. So we can unify it and move it to a
common place by introducing CPU_PM_CPU_IDLE_ENTER macro that can be
used in all places avoiding duplication.

This is in preparation of reuse of the generic cpuidle entry function
for ACPI LPI support on ARM64.

Suggested-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Sudeep Holla <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Sudeep Holla 2016-07-19 18:52:56 +01:00 • committed by Rafael J. Wysocki
commit 220276e09b
2 changed files with 24 additions and 20 deletions
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26
drivers/cpuidle/cpuidle-arm.c
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@ -36,26 +36,12 @@
static int arm_enter_idle_state(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int idx)
{
int ret;
if (!idx) {
cpu_do_idle();
return idx;
}
ret = cpu_pm_enter();
if (!ret) {
/*
* Pass idle state index to cpu_suspend which in turn will
* call the CPU ops suspend protocol with idle index as a
* parameter.
*/
ret = arm_cpuidle_suspend(idx);
cpu_pm_exit();
}
return ret ? -1 : idx;
/*
* Pass idle state index to arm_cpuidle_suspend which in turn
* will call the CPU ops suspend protocol with idle index as a
* parameter.
*/
return CPU_PM_CPU_IDLE_ENTER(arm_cpuidle_suspend, idx);
}
static struct cpuidle_driver arm_idle_driver = {