[PATCH 2/2] ARM: tegra: Use DT /cpu node to detect number of CPU core

[Russell King - ARM Linux]

On Mon, Jan 14, 2013 at 09:52:50AM +0200, Hiroshi Doyu wrote:
> +	if (!arm_dt_cpu_map_valid())
> +		set_cpu_possible(0, true);

You don't need to do any of this (and, therefore, I don't think you even
need the first patch.)

The generic boot code will set CPU0 as possible, present and online.  Think
about it: you're booting on that very CPU so it better be possible, present
and online.  If it isn't, what CPU is executing your code?

arm_dt_init_cpu_maps() will only ever set _additional_ CPUs in the possible
map.

Ergo, by the time the above code is run, CPU0 will already be marked as
possible.  Therefore, the above code and arm_dt_cpu_map_valid() is not
required.