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ACPI / hotplug: Move container-specific code out of the core 

Move container-specific uevents from the core hotplug code to the
container scan handler's .attach() and .detach() callbacks.

This way the core will not have to special-case containers and
the uevents will be guaranteed to happen every time a container
is either scanned or trimmed as appropriate.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2013-11-22 21:55:32 +01:00
parent 3338db0057
commit 46394fd017
3 changed files with 9 additions and 17 deletions
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11
drivers/acpi/container.c
View File

@ -44,19 +44,24 @@ static const struct acpi_device_id container_device_ids[] = {
{"", 0},
};
static int container_device_attach(struct acpi_device *device,
static int container_device_attach(struct acpi_device *adev,
const struct acpi_device_id *not_used)
{
/* This is necessary for container hotplug to work. */
kobject_uevent(&adev->dev.kobj, KOBJ_ONLINE);
return 1;
}
static void container_device_detach(struct acpi_device *adev)
{
kobject_uevent(&adev->dev.kobj, KOBJ_OFFLINE);
}
static struct acpi_scan_handler container_handler = {
.ids = container_device_ids,
.attach = container_device_attach,
.detach = container_device_detach,
.hotplug = {
.enabled = true,
.mode = AHM_CONTAINER,
},
};

8
drivers/acpi/scan.c
View File

@ -206,9 +206,6 @@ static int acpi_scan_hot_remove(struct acpi_device *device)
acpi_status status;
unsigned long long sta;
if (device->handler && device->handler->hotplug.mode == AHM_CONTAINER)
kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
/*
* Carry out two passes here and ignore errors in the first pass,
* because if the devices in question are memory blocks and
@ -288,10 +285,7 @@ static int acpi_scan_device_check(struct acpi_device *adev)
dev_warn(&adev->dev, "Namespace scan failure\n");
return error;
}
if (adev->handler) {
if (adev->handler->hotplug.mode == AHM_CONTAINER)
kobject_uevent(&adev->dev.kobj, KOBJ_ONLINE);
} else {
if (!adev->handler) {
dev_warn(&adev->dev, "Enumeration failure\n");
return -ENODEV;
}

7
include/acpi/acpi_bus.h
View File

@ -91,16 +91,9 @@ struct acpi_device;
* -----------------
*/
enum acpi_hotplug_mode {
AHM_GENERIC = 0,
AHM_CONTAINER,
AHM_COUNT
};
struct acpi_hotplug_profile {
struct kobject kobj;
bool enabled:1;
enum acpi_hotplug_mode mode;
int (*scan_dependent)(struct acpi_device *adev);
};