commit bd3adca52bc43b72c75db3e4c7809d47923b154c
author Shaohua Li <shaohua.li@intel.com> Fri Nov 02 09:32:38 2007 +0800
committer Jeff Garzik <jeff@garzik.org> Wed Jan 23 05:24:09 2008 -0500
tree ec42456926e50a4b0adf916ac1c5f39f76e057f8
parent ae8d4ee7ff429136c8b482c3b38ed994c021d3fc

libata-acpi: add ACPI _PSx method

ACPI spec (ver 3.0a, p289) requires IDE power on/off executes ACPI _PSx
methods. As recently most PATA drivers use libata, this patch adds _PSx
method support in libata. ACPI spec doesn't mention if SATA requires the
same _PSx method.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/ata/libata-eh.c

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 21a81cd..1d7faab 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2747,6 +2747,7 @@
 	if (ap->ops->port_suspend)
 		rc = ap->ops->port_suspend(ap, ap->pm_mesg);
 
+	ata_acpi_set_state(ap, PMSG_SUSPEND);
  out:
 	/* report result */
 	spin_lock_irqsave(ap->lock, flags);
@@ -2792,6 +2793,8 @@
 
 	WARN_ON(!(ap->pflags & ATA_PFLAG_SUSPENDED));
 
+	ata_acpi_set_state(ap, PMSG_ON);
+
 	if (ap->ops->port_resume)
 		rc = ap->ops->port_resume(ap);