On Wed, 25 Feb 2015 16:39:50 +0800
, Hanjun Guo <hanjun....@linaro.org>
 wrote:
> From: Graeme Gregory <graeme.greg...@linaro.org>
> 
> 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.
> 
> CC: Catalin Marinas <catalin.mari...@arm.com>
> CC: Will Deacon <will.dea...@arm.com>
> Tested-by: Suravee Suthikulpanit <suravee.suthikulpa...@amd.com>
> Tested-by: Yijing Wang <wangyij...@huawei.com>
> Tested-by: Mark Langsdorf <mlang...@redhat.com>
> Tested-by: Jon Masters <j...@redhat.com>
> Tested-by: Timur Tabi <ti...@codeaurora.org>
> Tested-by: Robert Richter <rrich...@cavium.com>
> Acked-by: Robert Richter <rrich...@cavium.com>
> Signed-off-by: Graeme Gregory <graeme.greg...@linaro.org>
> Signed-off-by: Hanjun Guo <hanjun....@linaro.org>

Acked-by: Grant Likely <grant.lik...@linaro.org>

> ---
>  arch/arm64/kernel/setup.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
> index 4f1a014..e8c7000 100644
> --- 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();
>  
>       psci_init();
>  
> -- 
> 1.9.1
> 

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