linux-kernel - Re: [PATCH v4 4/6] ARM: rockchip: add basic smp support for rk3288

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Message-ID: <CAD=FV=WGnE3fBfzLGN_x8dFqq4RV=OnVAyUgRQheMiyG4U7TkQ@mail.gmail.com>
Date:	Tue, 14 Oct 2014 13:24:03 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Kever Yang <kever.yang@...k-chips.com>
Cc:	Heiko Stübner <heiko@...ech.de>,
	Sonny Rao <sonnyrao@...omium.org>,
	Addy Ke <addy.ke@...k-chips.com>,
	Eddie Cai <cf@...k-chips.com>, Jianqun Xu <xjq@...k-chips.com>,
	han jiang <hj@...k-chips.com>,
	Tao Huang <huangtao@...k-chips.com>,
	linux-rockchip@...ts.infradead.org,
	Russell King <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 4/6] ARM: rockchip: add basic smp support for rk3288

Kever,

On Mon, Oct 13, 2014 at 1:12 PM, Kever Yang <kever.yang@...k-chips.com> wrote:
> +       /*
> +        * We need to soft reset the cpu when we turn off the cpu power domain,
> +        * or else the active processors might be stalled when the individual
> +        * processor is powered down.
> +        */
> +       if (read_cpuid_part_number() != ARM_CPU_PART_CORTEX_A9) {

I haven't done a full review of this patch, but it seems unlikely that
your uses of read_cpuid_part_number() and read_cpuid_part() in this
patch are correct.  You use both functions and in both cases compare
the results to ARM_CPU_PART_CORTEX_A9.
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