linux-kernel - Re: [PATCH v6 2/3] ARM: rockchip: ensure CPU to enter WFI/WFE state

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Date:	Tue, 9 Jun 2015 11:13:19 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Caesar Wang <wxt@...k-chips.com>
Cc:	Heiko Stuebner <heiko@...ech.de>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	"open list:ARM/Rockchip SoC..." <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 v6 2/3] ARM: rockchip: ensure CPU to enter WFI/WFE state

Caesar,

On Tue, Jun 9, 2015 at 2:49 AM, Caesar Wang <wxt@...k-chips.com> wrote:
> The patch can ensure that v7_exit_coherency_flush() in rockchip_cpu_die()
> executed in time.
> The mdelay(1) has enough time to fix the problem of CPU offlining.
> That's a workaround way in rockchip hotplug code,
> At least, we haven't a better way to solve it. Who know,
> that maybe fixed by chip (hardware) in the future.
>
> Signed-off-by: Caesar Wang <wxt@...k-chips.com>
>
> ---
>
> Changes in v6:
> - Fix the delay 1ms describing.
> Series-changes: 5
> - Fix the patch decription.
> - Add the changelog.
> Series-changes: 2
> - As Kever points out, Fix the subject typo WFI/WFE.
>
>  arch/arm/mach-rockchip/platsmp.c | 7 +++++++
>  1 file changed, 7 insertions(+)

Reviewed-by: Douglas Anderson <dianders@...omium.org>
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