summaryrefslogtreecommitdiff
path: root/drivers/acpi/acpica/evgpe.c
diff options
context:
space:
mode:
authorRafael J. Wysocki <rjw@sisk.pl>2011-02-24 21:59:21 +0300
committerRafael J. Wysocki <rjw@sisk.pl>2011-02-24 21:59:21 +0300
commit981858bd7a401aa9607d9f430d5de920025fc3ea (patch)
treeac68be4bb6d73e20e5e10dfc19af679214249f60 /drivers/acpi/acpica/evgpe.c
parent2949ad50711cc161721cf788711722eeeca33764 (diff)
downloadlinux-981858bd7a401aa9607d9f430d5de920025fc3ea.tar.xz
ACPI / ACPICA: Implicit notify for multiple devices
Commit bba63a2 (ACPICA: Implicit notify support) introduced a mechanism that causes a notify request of type ACPI_NOTIFY_DEVICE_WAKE to be queued automatically by acpi_ev_asynch_execute_gpe_method() for the device whose _PRW points to the GPE being handled if that GPE is not associated with an _Lxx/_Exx method. However, it turns out that on some systems there are multiple devices with _PRW pointing to the same GPE without _Lxx/_Exx and the mechanism introduced by commit bba63a2 needs to be extended so that "implicit" notify requests of type ACPI_NOTIFY_DEVICE_WAKE can be queued automatically for all those devices at the same time. Reported-and-tested-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/acpi/acpica/evgpe.c')
-rw-r--r--drivers/acpi/acpica/evgpe.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 14988a86066f..f4725212eb48 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -457,6 +457,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
acpi_status status;
struct acpi_gpe_event_info *local_gpe_event_info;
struct acpi_evaluate_info *info;
+ struct acpi_gpe_notify_object *notify_object;
ACPI_FUNCTION_TRACE(ev_asynch_execute_gpe_method);
@@ -508,10 +509,18 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
* from this thread -- because handlers may in turn run other
* control methods.
*/
- status =
- acpi_ev_queue_notify_request(local_gpe_event_info->dispatch.
- device_node,
- ACPI_NOTIFY_DEVICE_WAKE);
+ status = acpi_ev_queue_notify_request(
+ local_gpe_event_info->dispatch.device.node,
+ ACPI_NOTIFY_DEVICE_WAKE);
+
+ notify_object = local_gpe_event_info->dispatch.device.next;
+ while (ACPI_SUCCESS(status) && notify_object) {
+ status = acpi_ev_queue_notify_request(
+ notify_object->node,
+ ACPI_NOTIFY_DEVICE_WAKE);
+ notify_object = notify_object->next;
+ }
+
break;
case ACPI_GPE_DISPATCH_METHOD: