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ide: hook ACPI _PSx method to IDE power on/off

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ACPI spec defines the sequence of IDE power on/off:
Powering down:
	Call _GTM.
	Power down drive (calls _PS3 method and turns off power planes).
Powering up:
	Power up drive (calls _PS0 method if present and turns on power planes).
	Call _STM passing info from _GTM (possibly modified), with ID data from
	each drive.
	Initialize the channel.
	May modify the results of _GTF.
	For each drive:
		Call _GTF.
		Execute task file (possibly modified).
This patch adds the missed _PS0/_PS3 methods call.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Shaohua Li
2007-10-11 23:53:58 +02:00
committed by Bartlomiej Zolnierkiewicz
parent 8cb1f567f4
commit 5e32132bef
4 changed files with 59 additions and 3 deletions
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4
drivers/acpi/bus.c
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@@ -262,10 +262,12 @@ int acpi_bus_set_power(acpi_handle handle, int state)
printk(KERN_WARNING PREFIX
"Transitioning device [%s] to D%d\n",
device->pnp.bus_id, state);
else
else {
device->power.state = state;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Device [%s] transitioned to D%d\n",
device->pnp.bus_id, state));
}
return result;
}