diff options
author | Joel Becker <jlbec@evilplan.org> | 2011-03-28 09:44:26 -0700 |
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committer | Joel Becker <jlbec@evilplan.org> | 2011-03-28 09:44:26 -0700 |
commit | 99bdc3880c611c7f2061fbd5372ef81b40217e26 (patch) | |
tree | ef68a53e28e9ee53ce9db3642bab5fa5b3d44866 /drivers/acpi/acpica/evxfgpe.c | |
parent | ed59992e8d91b70053c53d846a76f7e1ac000454 (diff) | |
parent | b4e1b7e88b2c87c358c2a88bec0c76d25accc604 (diff) |
Merge branch 'mlog_replace_for_39' of git://repo.or.cz/taoma-kernel into ocfs2-merge-window-fix
Diffstat (limited to 'drivers/acpi/acpica/evxfgpe.c')
-rw-r--r-- | drivers/acpi/acpica/evxfgpe.c | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index 3b20a3401b6..52aaff3df56 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -198,7 +198,9 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, acpi_status status = AE_BAD_PARAMETER; struct acpi_gpe_event_info *gpe_event_info; struct acpi_namespace_node *device_node; + struct acpi_gpe_notify_object *notify_object; acpi_cpu_flags flags; + u8 gpe_dispatch_mask; ACPI_FUNCTION_TRACE(acpi_setup_gpe_for_wake); @@ -221,27 +223,49 @@ acpi_setup_gpe_for_wake(acpi_handle wake_device, goto unlock_and_exit; } + if (wake_device == ACPI_ROOT_OBJECT) { + goto out; + } + /* * If there is no method or handler for this GPE, then the * wake_device will be notified whenever this GPE fires (aka * "implicit notify") Note: The GPE is assumed to be * level-triggered (for windows compatibility). */ - if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) == - ACPI_GPE_DISPATCH_NONE) && (wake_device != ACPI_ROOT_OBJECT)) { + gpe_dispatch_mask = gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK; + if (gpe_dispatch_mask != ACPI_GPE_DISPATCH_NONE + && gpe_dispatch_mask != ACPI_GPE_DISPATCH_NOTIFY) { + goto out; + } - /* Validate wake_device is of type Device */ + /* Validate wake_device is of type Device */ - device_node = ACPI_CAST_PTR(struct acpi_namespace_node, - wake_device); - if (device_node->type != ACPI_TYPE_DEVICE) { - goto unlock_and_exit; - } + device_node = ACPI_CAST_PTR(struct acpi_namespace_node, wake_device); + if (device_node->type != ACPI_TYPE_DEVICE) { + goto unlock_and_exit; + } + + if (gpe_dispatch_mask == ACPI_GPE_DISPATCH_NONE) { gpe_event_info->flags = (ACPI_GPE_DISPATCH_NOTIFY | ACPI_GPE_LEVEL_TRIGGERED); - gpe_event_info->dispatch.device_node = device_node; + gpe_event_info->dispatch.device.node = device_node; + gpe_event_info->dispatch.device.next = NULL; + } else { + /* There are multiple devices to notify implicitly. */ + + notify_object = ACPI_ALLOCATE_ZEROED(sizeof(*notify_object)); + if (!notify_object) { + status = AE_NO_MEMORY; + goto unlock_and_exit; + } + + notify_object->node = device_node; + notify_object->next = gpe_event_info->dispatch.device.next; + gpe_event_info->dispatch.device.next = notify_object; } + out: gpe_event_info->flags |= ACPI_GPE_CAN_WAKE; status = AE_OK; |