From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
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@xxxxxxxxx>
---
drivers/acpi/container.c | 11 ++++++++---
drivers/acpi/scan.c | 8 +-------
include/acpi/acpi_bus.h | 7 -------
3 files changed, 9 insertions(+), 17 deletions(-)
Index: linux-pm/drivers/acpi/container.c
===================================================================
--- linux-pm.orig/drivers/acpi/container.c
+++ linux-pm/drivers/acpi/container.c
@@ -44,19 +44,24 @@ static const struct acpi_device_id conta
{"", 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,
},
};
Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -206,9 +206,6 @@ static int acpi_scan_hot_remove(struct a
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
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;
}
Index: linux-pm/include/acpi/acpi_bus.h
===================================================================
--- linux-pm.orig/include/acpi/acpi_bus.h
+++ linux-pm/include/acpi/acpi_bus.h
@@ -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);
};
--
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