[PATCH 4/8] ARM: vexpress: use generic cpu idle function for wfi
Pawel Moll
pawel.moll at arm.com
Fri Jun 7 11:11:10 EDT 2013
On Mon, 2013-05-27 at 15:32 +0100, Sanjay Singh Rawat wrote:
> use cpu_do_idle for entering the wfi mode.
>
> Signed-off-by: Sanjay Singh Rawat <sanjay.rawat at linaro.org>
> ---
> arch/arm/mach-vexpress/hotplug.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-vexpress/hotplug.c b/arch/arm/mach-vexpress/hotplug.c
> index f0ce6b8..b3dffc2 100644
> --- a/arch/arm/mach-vexpress/hotplug.c
> +++ b/arch/arm/mach-vexpress/hotplug.c
> @@ -60,7 +60,8 @@ static inline void platform_do_lowpower(unsigned int cpu, int *spurious)
> * code will have already disabled interrupts
> */
> for (;;) {
> - wfi();
> + /* enter WFI mode */
> + cpu_do_idle();
>
> if (pen_release == cpu_logical_map(cpu)) {
> /*
I probably don't get the whole picture, but may I ask what is the
rationale behind this change? As in: why cpu_do_idle() is better?
Paweł
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