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authorRafael J. Wysocki <rjw@sisk.pl>2008-01-08 00:06:16 +0100
committerLen Brown <len.brown@intel.com>2008-02-01 18:30:56 -0500
commit3c1d2b6085d75df0691cec6a4a053c0aa55fe4c9 (patch)
treecf5b546db40f51c874041250128104cb4344331b /drivers/acpi/sleep/main.c
parentc95d47a868f35cd47643d116a3c680cdaa954df8 (diff)
ACPI: Separate disabling of GPEs from _PTS
The preparation to enter an ACPI system sleep state is now tied to the disabling of GPEs, but the GPEs should not be disabled before suspending devices. Since on ACPI 1.0x systems the _PTS global control method should be executed before suspending devices, we need to disable GPEs separately. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/sleep/main.c')
-rw-r--r--drivers/acpi/sleep/main.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index fdd8139b3f98..198ff8a1529a 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -91,10 +91,13 @@ static int acpi_pm_begin(suspend_state_t pm_state)
static int acpi_pm_prepare(void)
{
- int error = acpi_sleep_prepare(acpi_target_sleep_state);
+ int error;
+ error = acpi_sleep_prepare(acpi_target_sleep_state);
if (error)
acpi_target_sleep_state = ACPI_STATE_S0;
+ else if (!ACPI_SUCCESS(acpi_hw_disable_all_gpes()))
+ error = -EFAULT;
return error;
}
@@ -261,7 +264,16 @@ static int acpi_hibernation_start(void)
static int acpi_hibernation_prepare(void)
{
- return acpi_sleep_prepare(ACPI_STATE_S4);
+ int error;
+
+ error = acpi_sleep_prepare(ACPI_STATE_S4);
+ if (error)
+ return error;
+
+ if (!ACPI_SUCCESS(acpi_hw_disable_all_gpes()))
+ error = -EFAULT;
+
+ return error;
}
static int acpi_hibernation_enter(void)
@@ -426,6 +438,7 @@ static void acpi_power_off_prepare(void)
{
/* Prepare to power off the system */
acpi_sleep_prepare(ACPI_STATE_S5);
+ acpi_hw_disable_all_gpes();
}
static void acpi_power_off(void)