Re: [Xen-devel] [PATCH v5 2/5] acpi: Call acpi_os_prepare_sleep hook in reduced hardware sleep path

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Fri, Jun 28, 2013 at 09:46:21AM -0400, Ben Guthro wrote:
> In version 3.4 acpi_os_prepare_sleep() got introduced in parallel with
> reduced hardware sleep support, and the two changes didn't get
> synchronized: The new code doesn't call the hook function (if so
> requested). Fix this, requiring a parameter to be added to the
> hook function to distinguish "extended" from "legacy" sleep.
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> Signed-off-by: Ben Guthro <benjamin.guthro@xxxxxxxxxx>
> Cc: Bob Moore <robert.moore@xxxxxxxxx>
> Cc: Rafael J. Wysocki <rjw@xxxxxxx>
> Cc: linux-acpi@xxxxxxxxxxxxxxx

You can also add
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

> ---
>  drivers/acpi/acpica/hwesleep.c |    7 +++++++
>  drivers/acpi/acpica/hwsleep.c  |    2 +-
>  include/acpi/acpiosxf.h        |    4 ++--
>  3 files changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c
> index 5e5f762..69b3e15 100644
> --- a/drivers/acpi/acpica/hwesleep.c
> +++ b/drivers/acpi/acpica/hwesleep.c
> @@ -128,6 +128,13 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
>  
>       ACPI_FLUSH_CPU_CACHE();
>  
> +     status = acpi_os_prepare_sleep(sleep_state, acpi_gbl_sleep_type_a,
> +                                    acpi_gbl_sleep_type_b, TRUE);
> +     if (ACPI_SKIP(status))
> +             return_ACPI_STATUS(AE_OK);
> +     if (ACPI_FAILURE(status))
> +             return_ACPI_STATUS(status);
> +
>       /*
>        * Set the SLP_TYP and SLP_EN bits.
>        *
> diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
> index 867b947..cf78157 100644
> --- a/drivers/acpi/acpica/hwsleep.c
> +++ b/drivers/acpi/acpica/hwsleep.c
> @@ -152,7 +152,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
>       ACPI_FLUSH_CPU_CACHE();
>  
>       status = acpi_os_prepare_sleep(sleep_state, pm1a_control,
> -                                    pm1b_control);
> +                                    pm1b_control, FALSE);
>       if (ACPI_SKIP(status))
>               return_ACPI_STATUS(AE_OK);
>       if (ACPI_FAILURE(status))
> diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
> index c68b779..51d0f78 100644
> --- a/include/acpi/acpiosxf.h
> +++ b/include/acpi/acpiosxf.h
> @@ -279,7 +279,7 @@ void acpi_os_close_directory(void *dir_handle);
>  /*
>   * ACPI sleep preparation
>   */
> -acpi_status acpi_os_prepare_sleep(u8 sleep_state,
> -                               u32 pm1a_control, u32 pm1b_control);
> +acpi_status acpi_os_prepare_sleep(u8 sleep_state, u32 val_a, u32 val_b,
> +                               u8 extended);
>  
>  #endif                               /* __ACPIOSXF_H__ */
> -- 
> 1.7.9.5
> 

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