Commit 46394fd01 (ACPI / hotplug: Move container-specific code out of the core) removed the generation of "online" uevents for containers, because "add" uevents are now generated for them automatically when container system devices are registered. However, there are user space tools that need to be notified when the container and all of its children have been enumerated, which doesn't happen any more. For this reason, add a mechanism allowing "online" uevents to be generated for ACPI containers after enumerating the container along with all of its children.
Unified · Split
| @@ -99,6 +99,13 @@ static void container_device_detach(struct acpi_device *adev) · 98 unmodified lines | |||
| 99 | device_unregister(dev); | 99 | device_unregister(dev); |
| 100 | } | 100 | } |
| 101 | 101 | ||
| 102 | static void container_device_online(struct acpi_device *adev) | ||
| 103 | { | ||
| 104 | struct device *dev = acpi_driver_data(adev); | ||
| 105 | |||
| 106 | kobject_uevent(&dev->kobj, KOBJ_ONLINE); | ||
| 107 | } | ||
| 108 | |||
| 102 | static struct acpi_scan_handler container_handler = { | 109 | static struct acpi_scan_handler container_handler = { |
| 103 | .ids = container_device_ids, | 110 | .ids = container_device_ids, |
| 104 | .attach = container_device_attach, | 111 | .attach = container_device_attach, |
| @@ -106,6 +113,7 @@ static struct acpi_scan_handler container_handler = { · 1 unmodified line | |||
| 106 | .hotplug = { | 113 | .hotplug = { |
| 107 | .enabled = true, | 114 | .enabled = true, |
| 108 | .demand_offline = true, | 115 | .demand_offline = true, |
| 116 | .notify_online = container_device_online, | ||
| 109 | }, | 117 | }, |
| 110 | }; | 118 | }; |
| 111 | 119 | ||
| @@ -2189,6 +2189,9 @@ static void acpi_bus_attach(struct acpi_device *device) · 2188 unmodified lines | |||
| 2189 | ok: | 2189 | ok: |
| 2190 | list_for_each_entry(child, &device->children, node) | 2190 | list_for_each_entry(child, &device->children, node) |
| 2191 | acpi_bus_attach(child); | 2191 | acpi_bus_attach(child); |
| 2192 | |||
| 2193 | if (device->handler && device->handler->hotplug.notify_online) | ||
| 2194 | device->handler->hotplug.notify_online(device); | ||
| 2192 | } | 2195 | } |
| 2193 | 2196 | ||
| 2194 | /** | 2197 | /** |
| @@ -118,6 +118,7 @@ struct acpi_device; · 117 unmodified lines | |||
| 118 | struct acpi_hotplug_profile { | 118 | struct acpi_hotplug_profile { |
| 119 | struct kobject kobj; | 119 | struct kobject kobj; |
| 120 | int (*scan_dependent)(struct acpi_device *adev); | 120 | int (*scan_dependent)(struct acpi_device *adev); |
| 121 | void (*notify_online)(struct acpi_device *adev); | ||
| 121 | bool enabled:1; | 122 | bool enabled:1; |
| 122 | bool demand_offline:1; | 123 | bool demand_offline:1; |
| 123 | }; | 124 | }; |