Hi!
> Provide new ACPI method tracking the target system state, for use
> during suspend() and other PM calls. It returns ACPI_STATE_S0
> except during true suspend paths.
>
> Use that to finally implement the platform_pci_choose_state() hook
> on ACPI platforms. It calls "_S3D" and similar methods, and uses
> the result appropriately.
>
> Fix pci_choose_state() to finally behave sanely too.
>
> Minor whitespace fixes.
>
> Lightly tested -- STR only, with only USB affected by the new code.
>
> Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
>
> ---
> drivers/acpi/sleep/main.c | 29 +++++++++++-
> drivers/pci/pci-acpi.c | 107 +++++++++++++++++++++++++++++++++-------------
> drivers/pci/pci.c | 51 ++++++++++++---------
> include/acpi/acpixf.h | 2
> 4 files changed, 135 insertions(+), 54 deletions(-)
>
> --- g26.orig/drivers/acpi/sleep/main.c 2007-05-09 08:57:37.000000000 -0700
> +++ g26/drivers/acpi/sleep/main.c 2007-05-09 08:58:33.000000000 -0700
> @@ -35,6 +35,20 @@ static u32 acpi_suspend_states[] = {
>
> static int init_8259A_after_S1;
>
> +static u8 acpi_target_sleep_state = ACPI_STATE_S0;
> +
> +/**
> + * acpi_get_target_sleep_state - return target ACPI S-state
> + *
> + * When used during suspend processing, this returns the target state
> + * such as ACPI_STATE_S3. Otherwise it returns ACPI_STATE_S0.
> + */
> +int acpi_get_target_sleep_state(void)
> +{
> + return acpi_target_sleep_state;
> +}
> +/* EXPORT_SYMBOL(acpi_get_target_sleep_state); ... if you need it */
> +
> /**
> * acpi_pm_prepare - Do preliminary suspend work.
> * @pm_state: suspend state we're entering.
This is quite an ugly hack, right? Is it really neccessary to use
global variable for this?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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