From ec2cd81ccfc055155ef4ca673f207168f516d287 Mon Sep 17 00:00:00 2001 From: Rafael J. Wysocki Date: Fri, 2 Nov 2012 01:40:09 +0100 Subject: ACPI / PM: Move routines for adding/removing device wakeup notifiers ACPI routines for adding and removing device wakeup notifiers are currently defined in a PCI-specific file, but they will be necessary for non-PCI devices too, so move them to a separate file under drivers/acpi and rename them to indicate their ACPI origins. Signed-off-by: Rafael J. Wysocki --- drivers/pci/pci-acpi.c | 71 +++----------------------------------------------- 1 file changed, 4 insertions(+), 67 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 63d6618a4804..1af4008182fd 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -20,8 +20,6 @@ #include #include "pci.h" -static DEFINE_MUTEX(pci_acpi_pm_notify_mtx); - /** * pci_acpi_wake_bus - Wake-up notification handler for root buses. * @handle: ACPI handle of a device the notification is for. @@ -68,67 +66,6 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context) pci_pme_wakeup_bus(pci_dev->subordinate); } -/** - * add_pm_notifier - Register PM notifier for given ACPI device. - * @dev: ACPI device to add the notifier for. - * @context: PCI device or bus to check for PME status if an event is signaled. - * - * NOTE: @dev need not be a run-wake or wake-up device to be a valid source of - * PM wake-up events. For example, wake-up events may be generated for bridges - * if one of the devices below the bridge is signaling PME, even if the bridge - * itself doesn't have a wake-up GPE associated with it. - */ -static acpi_status add_pm_notifier(struct acpi_device *dev, - acpi_notify_handler handler, - void *context) -{ - acpi_status status = AE_ALREADY_EXISTS; - - mutex_lock(&pci_acpi_pm_notify_mtx); - - if (dev->wakeup.flags.notifier_present) - goto out; - - status = acpi_install_notify_handler(dev->handle, - ACPI_SYSTEM_NOTIFY, - handler, context); - if (ACPI_FAILURE(status)) - goto out; - - dev->wakeup.flags.notifier_present = true; - - out: - mutex_unlock(&pci_acpi_pm_notify_mtx); - return status; -} - -/** - * remove_pm_notifier - Unregister PM notifier from given ACPI device. - * @dev: ACPI device to remove the notifier from. - */ -static acpi_status remove_pm_notifier(struct acpi_device *dev, - acpi_notify_handler handler) -{ - acpi_status status = AE_BAD_PARAMETER; - - mutex_lock(&pci_acpi_pm_notify_mtx); - - if (!dev->wakeup.flags.notifier_present) - goto out; - - status = acpi_remove_notify_handler(dev->handle, - ACPI_SYSTEM_NOTIFY, - handler); - if (ACPI_FAILURE(status)) - goto out; - - dev->wakeup.flags.notifier_present = false; - - out: - mutex_unlock(&pci_acpi_pm_notify_mtx); - return status; -} - /** * pci_acpi_add_bus_pm_notifier - Register PM notifier for given PCI bus. * @dev: ACPI device to add the notifier for. @@ -137,7 +74,7 @@ static acpi_status remove_pm_notifier(struct acpi_device *dev, acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev, struct pci_bus *pci_bus) { - return add_pm_notifier(dev, pci_acpi_wake_bus, pci_bus); + return acpi_add_pm_notifier(dev, pci_acpi_wake_bus, pci_bus); } /** @@ -146,7 +83,7 @@ acpi_status pci_acpi_add_bus_pm_notifier(struct acpi_device *dev, */ acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) { - return remove_pm_notifier(dev, pci_acpi_wake_bus); + return acpi_remove_pm_notifier(dev, pci_acpi_wake_bus); } /** @@ -157,7 +94,7 @@ acpi_status pci_acpi_remove_bus_pm_notifier(struct acpi_device *dev) acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, struct pci_dev *pci_dev) { - return add_pm_notifier(dev, pci_acpi_wake_dev, pci_dev); + return acpi_add_pm_notifier(dev, pci_acpi_wake_dev, pci_dev); } /** @@ -166,7 +103,7 @@ acpi_status pci_acpi_add_pm_notifier(struct acpi_device *dev, */ acpi_status pci_acpi_remove_pm_notifier(struct acpi_device *dev) { - return remove_pm_notifier(dev, pci_acpi_wake_dev); + return acpi_remove_pm_notifier(dev, pci_acpi_wake_dev); } phys_addr_t acpi_pci_root_get_mcfg_addr(acpi_handle handle) -- cgit v1.2.3