diff options
Diffstat (limited to 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 46 |
1 files changed, 29 insertions, 17 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index e2db1bdd9dd2..901b2b7ce88b 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -464,7 +464,6 @@ out_free: static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { struct acpi_device *adev; - struct acpi_driver *driver; u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; bool hotplug_event = false; @@ -516,10 +515,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) if (!adev) goto err; - driver = adev->driver; - if (driver && driver->ops.notify && - (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) - driver->ops.notify(adev, type); + if (adev->dev.driver) { + struct acpi_driver *driver = to_acpi_driver(adev->dev.driver); + + if (driver && driver->ops.notify && + (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) + driver->ops.notify(adev, type); + } if (!hotplug_event) { acpi_bus_put_acpi_device(adev); @@ -538,8 +540,9 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) static void acpi_notify_device(acpi_handle handle, u32 event, void *data) { struct acpi_device *device = data; + struct acpi_driver *acpi_drv = to_acpi_driver(device->dev.driver); - device->driver->ops.notify(device, event); + acpi_drv->ops.notify(device, event); } static void acpi_notify_device_fixed(void *data) @@ -1032,8 +1035,6 @@ static int acpi_device_probe(struct device *dev) if (ret) return ret; - acpi_dev->driver = acpi_drv; - pr_debug("Driver [%s] successfully bound to device [%s]\n", acpi_drv->name, acpi_dev->pnp.bus_id); @@ -1043,7 +1044,6 @@ static int acpi_device_probe(struct device *dev) if (acpi_drv->ops.remove) acpi_drv->ops.remove(acpi_dev); - acpi_dev->driver = NULL; acpi_dev->driver_data = NULL; return ret; } @@ -1059,15 +1059,14 @@ static int acpi_device_probe(struct device *dev) static void acpi_device_remove(struct device *dev) { struct acpi_device *acpi_dev = to_acpi_device(dev); - struct acpi_driver *acpi_drv = acpi_dev->driver; + struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver); + + if (acpi_drv->ops.notify) + acpi_device_remove_notify_handler(acpi_dev); + + if (acpi_drv->ops.remove) + acpi_drv->ops.remove(acpi_dev); - if (acpi_drv) { - if (acpi_drv->ops.notify) - acpi_device_remove_notify_handler(acpi_dev); - if (acpi_drv->ops.remove) - acpi_drv->ops.remove(acpi_dev); - } - acpi_dev->driver = NULL; acpi_dev->driver_data = NULL; put_device(dev); @@ -1101,6 +1100,7 @@ static int acpi_dev_for_one_check(struct device *dev, void *context) return adwc->fn(to_acpi_device(dev), adwc->data); } +EXPORT_SYMBOL_GPL(acpi_dev_for_each_child); int acpi_dev_for_each_child(struct acpi_device *adev, int (*fn)(struct acpi_device *, void *), void *data) @@ -1113,6 +1113,18 @@ int acpi_dev_for_each_child(struct acpi_device *adev, return device_for_each_child(&adev->dev, &adwc, acpi_dev_for_one_check); } +int acpi_dev_for_each_child_reverse(struct acpi_device *adev, + int (*fn)(struct acpi_device *, void *), + void *data) +{ + struct acpi_dev_walk_context adwc = { + .fn = fn, + .data = data, + }; + + return device_for_each_child_reverse(&adev->dev, &adwc, acpi_dev_for_one_check); +} + /* -------------------------------------------------------------------------- Initialization/Cleanup -------------------------------------------------------------------------- */ |