linux-kernel - Re: [PATCH 2/2] ACPI: Remove unused lockable in acpi_device

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Date:	Wed, 17 Oct 2012 10:26:26 +0900
From:	Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>
To:	Toshi Kani <toshi.kani@...com>
CC:	<linux-acpi@...r.kernel.org>, <lenb@...nel.org>,
	<linux-kernel@...r.kernel.org>, <rjw@...k.pl>, <liuj97@...il.com>
Subject: Re: [PATCH 2/2] ACPI: Remove unused lockable in acpi_device_flags

2012/10/16 1:34, Toshi Kani wrote:
> Removed lockable in struct acpi_device_flags since it is no
> longer used by any code. acpi_bus_hot_remove_device() cannot
> use this flag because acpi_bus_trim() frees up its acpi_device
> object. Furthermore, the dock driver calls _LCK method without
> using this lockable flag.
> 
> Signed-off-by: Toshi Kani <toshi.kani@...com>

Looks good to me.
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@...fujitsu.com>

> ---
>   drivers/acpi/scan.c     | 5 -----
>   include/acpi/acpi_bus.h | 3 +--
>   2 files changed, 1 insertion(+), 7 deletions(-)
> 
> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index ed87f43..19d3d4a 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -1017,11 +1017,6 @@ static int acpi_bus_get_flags(struct acpi_device *device)
>   			device->flags.ejectable = 1;
>   	}
>   
> -	/* Presence of _LCK indicates 'lockable' */
> -	status = acpi_get_handle(device->handle, "_LCK", &temp);
> -	if (ACPI_SUCCESS(status))
> -		device->flags.lockable = 1;
> -
>   	/* Power resources cannot be power manageable. */
>   	if (device->device_type == ACPI_BUS_TYPE_POWER)
>   		return 0;
> diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
> index 0daa0fb..e8b2877 100644
> --- a/include/acpi/acpi_bus.h
> +++ b/include/acpi/acpi_bus.h
> @@ -144,12 +144,11 @@ struct acpi_device_flags {
>   	u32 bus_address:1;
>   	u32 removable:1;
>   	u32 ejectable:1;
> -	u32 lockable:1;
>   	u32 suprise_removal_ok:1;
>   	u32 power_manageable:1;
>   	u32 performance_manageable:1;
>   	u32 eject_pending:1;
> -	u32 reserved:23;
> +	u32 reserved:24;
>   };
>   
>   /* File System */
> 


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