linux-kernel - Re: [PATCH v3 6/9] ACPI: move _OSI support functions to allow arch-dependent implementation

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Date:	Thu, 05 Mar 2015 00:09:27 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	al.stone@...aro.org
Cc:	lenb@...nel.org, catalin.marinas@....com, will.deacon@....com,
	robert.moore@...el.com, tony.luck@...el.com, fenghua.yu@...el.com,
	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org, devel@...ica.org,
	linux-arm-kernel@...ts.infradead.org, linaro-acpi@...ts.linaro.org,
	linaro-kernel@...ts.linaro.org, patches@...aro.org
Subject: Re: [PATCH v3 6/9] ACPI: move _OSI support functions to allow arch-dependent implementation

On Tuesday, February 24, 2015 05:36:22 PM al.stone@...aro.org wrote:
> From: Al Stone <al.stone@...aro.org>
> 
> Having moved the _OSI callback function needed by ACPICA from
> drivers/acpi/osl.c to drivers/acpi/osi.c, we now move all the
> remaining _OSI support functions to osi.c.
> 
> This patch is much larger than I had wanted it to be; several of the
> functions that implemented acpi_osi* command line options, or did the
> set up of the interfaces to be provided by _OSI, shared a static struct.
> Hence, I ended up moving a bunch of code at once rather than perhaps a
> function at a time.
> 
> With this patch, all the _OSI-associated code has now been moved
> to osi.c, and we next change the build so that we can make the
> _OSI implementation arch-dependent.
> 
> There is no functional change.
> 
> Signed-off-by: Al Stone <al.stone@...aro.org>
> ---
>  drivers/acpi/osi.c   | 152 ++++++++++++++++++++++++++++++++++++++++-
>  drivers/acpi/osl.c   | 187 ---------------------------------------------------
>  include/linux/acpi.h |   5 +-
>  3 files changed, 154 insertions(+), 190 deletions(-)
> 
> diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c
> index f23aa70..9943b7a 100644
> --- a/drivers/acpi/osi.c
> +++ b/drivers/acpi/osi.c
> @@ -30,6 +30,8 @@ ACPI_MODULE_NAME("osi");
>  
>  #define PREFIX			"ACPI: "
>  
> +static void __init acpi_osi_setup_late(void);
> +
>  /*
>   * The story of _OSI(Linux)
>   *
> @@ -68,10 +70,14 @@ static struct osi_linux {
>  	unsigned int	dmi:1;
>  	unsigned int	cmdline:1;
>  	unsigned int	default_disabling:1;
> -} osi_linux = {0, 0, 0, 0};
> +	unsigned int	interfaces_added:1;
> +} osi_linux = {0, 0, 0, 0, 0};
>  
>  u32 acpi_osi_handler(acpi_string interface, u32 supported)
>  {
> +	if (!osi_linux.interfaces_added)
> +		acpi_osi_setup_late();
> +

This wasn't there in the old code.

Please don't mix moving code around with adding new things to it.


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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