linux-kernel - Re: [PATCH v2 1/2] ARM: Add cpu_resume_arm() for firmwares that resume in ARM state

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Message-ID: <7h3821ubpf.fsf@deeprootsystems.com>
Date:	Mon, 08 Jun 2015 14:33:48 -0700
From:	Kevin Hilman <khilman@...nel.org>
To:	Stephen Boyd <sboyd@...eaurora.org>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Andy Gross <agross@...eaurora.org>,
	Kumar Gala <galak@...eaurora.org>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Lina Iyer <lina.iyer@...aro.org>
Subject: Re: [PATCH v2 1/2] ARM: Add cpu_resume_arm() for firmwares that resume in ARM state

Stephen Boyd <sboyd@...eaurora.org> writes:

> On 06/03, Russell King - ARM Linux wrote:
>> On Tue, Jun 02, 2015 at 12:12:57PM -0700, Stephen Boyd wrote:
>> > Some platforms always enter the kernel in the ARM state even if
>> > the kernel is compiled for THUMB2. Add a small wrapper on top of
>> > cpu_resume() that switches into THUMB2 state.
>> > 
>> > This fixes a problem reported by Kevin Hilman on next-20150601
>> > where the ifc6410 fails to boot a THUMB2 kernel because the
>> > platform's firmware always enters the kernel in ARM mode from
>> > deep idle states.
>> 
>> I think this bit of the commit message isn't quite correct: this will
>> only resolve the boot problem with a T2 kernel when the failing platform
>> is converted to use the cpu_resume_arm() entry point.
>> 
>> Apart from that, the patch looks good to me, thanks.
>
> Sure, it could say "This provides the functionality to fix a problem
> reported by..."

Stephen, are you planning to submit this through Russell's patch
tracker?  or...

Russell, should we take this through arm-soc along with PATCH 2/2 which
depends on this one?

Kevin
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