On Mon, Jan 27, 2014 at 06:08:17AM +0000, Nicolas Pitre wrote:

ARM and ARM64 are the only two architectures implementing
arch_cpu_idle_prepare() simply to call local_fiq_enable().

We have secondary_start_kernel() already calling local_fiq_enable() and
this is done a second time in arch_cpu_idle_prepare() in that case. And
enabling FIQs has nothing to do with idling the CPU to start with.

So let's introduce init_fiq_boot_cpu() to take care of FIQs on the boot
CPU and remove arch_cpu_idle_prepare(). This is now done a bit earlier
at late_initcall time but this shouldn't make a difference in practice
given that FIQs are not currently used on ARM64.

Signed-off-by: Nicolas Pitre <redacted>

For arm64, we could simply remove any reference to FIQs. I'm not aware
of anyone using them.

-- 
Catalin