From mboxrd@z Thu Jan  1 00:00:00 1970
From: Catalin Marinas <catalin.marinas@arm.com>
Subject: Re: [patch v11 09/23] ARM64 / ACPI: If we chose to boot from acpi
 then disable FDT
Date: Wed, 25 Mar 2015 17:00:27 +0000
Message-ID: <20150325170027.GG14585@localhost>
References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org>
 <1427205776-5060-10-git-send-email-hanjun.guo@linaro.org>
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To: Hanjun Guo <hanjun.guo@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>, Will Deacon <will.deacon@arm.com>, Olof Johansson <olof@lixom.net>, Grant Likely <grant.likely@linaro.org>, Mark Rutland <mark.rutland@arm.com>, Ashwin Chaugule <ashwinc@codeaurora.org>, Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>, Robert Richter <rric@kernel.org>, Arnd Bergmann <arnd@arndb.de>, Graeme Gregory <graeme.gregory@linaro.org>, linaro-acpi@lists.linaro.org, Marc Zyngier <marc.zyngier@arm.com>, Jon Masters <jcm@redhat.com>, Timur Tabi <timur@codeaurora.org>, Mark Salter <msalter@redhat.com>, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Mark Brown <broonie@kernel.org>, Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>, Sudeep Holla <Sudeep.Holla@arm.com>, linux-arm-kernel@lists.infradead.org

On Tue, Mar 24, 2015 at 10:02:42PM +0800, Hanjun Guo wrote:
> If the early boot methods of acpi are happy that we have valid ACPI
> tables and acpi=force has been passed, then do not unflat devicetree
> effectively disabling further hardware probing from DT.
[...]
> --- a/arch/arm64/kernel/setup.c
> +++ b/arch/arm64/kernel/setup.c
> @@ -390,7 +390,8 @@ void __init setup_arch(char **cmdline_p)
>  
>  	early_ioremap_reset();
>  
> -	unflatten_device_tree();
> +	if (acpi_disabled)
> +		unflatten_device_tree();

So if we have acpi=force but the acpi failed, do we have acpi_disabled
set? Or this requires Lorenzo's patch?

-- 
Catalin


From mboxrd@z Thu Jan  1 00:00:00 1970
From: catalin.marinas@arm.com (Catalin Marinas)
Date: Wed, 25 Mar 2015 17:00:27 +0000
Subject: [patch v11 09/23] ARM64 / ACPI: If we chose to boot from acpi
 then disable FDT
In-Reply-To: <1427205776-5060-10-git-send-email-hanjun.guo@linaro.org>
References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org>
 <1427205776-5060-10-git-send-email-hanjun.guo@linaro.org>
Message-ID: <20150325170027.GG14585@localhost>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Tue, Mar 24, 2015 at 10:02:42PM +0800, Hanjun Guo wrote:
> If the early boot methods of acpi are happy that we have valid ACPI
> tables and acpi=force has been passed, then do not unflat devicetree
> effectively disabling further hardware probing from DT.
[...]
> --- a/arch/arm64/kernel/setup.c
> +++ b/arch/arm64/kernel/setup.c
> @@ -390,7 +390,8 @@ void __init setup_arch(char **cmdline_p)
>  
>  	early_ioremap_reset();
>  
> -	unflatten_device_tree();
> +	if (acpi_disabled)
> +		unflatten_device_tree();

So if we have acpi=force but the acpi failed, do we have acpi_disabled
set? Or this requires Lorenzo's patch?

-- 
Catalin