From c4753e57b78b213f2384fa0dbafa348b087114fa Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Wed, 23 May 2012 20:25:20 -0600 Subject: ACPI: Add _OST support for sysfs eject Changed acpi_bus_hot_remove_device() to support _OST. This function is also changed to global so that it can be called from hotplug notify handlers to perform hot-remove operation. Changed acpi_eject_store(), which is the sysfs eject handler. It checks eject_pending to see if the request was originated from ACPI eject notification. If not, it calls _OST(0x103,84,) per Figure 6-37 in ACPI 5.0 spec. Added eject_pending bit to acpi_device_flags. This bit is set when the kernel has received an ACPI eject notification, but does not initiate its hot-remove operation by itself. Added struct acpi_eject_event. This structure is used to pass extended information to acpi_bus_hot_remove_device(), which has a single argument to support asynchronous call Signed-off-by: Toshi Kani Signed-off-by: Len Brown --- include/acpi/acpi_bus.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include/acpi/acpi_bus.h') diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 1139f3a01209..62eb514f8e3a 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -182,7 +182,8 @@ struct acpi_device_flags { u32 suprise_removal_ok:1; u32 power_manageable:1; u32 performance_manageable:1; - u32 reserved:24; + u32 eject_pending:1; + u32 reserved:23; }; /* File System */ @@ -334,6 +335,11 @@ struct acpi_bus_event { u32 data; }; +struct acpi_eject_event { + acpi_handle handle; + u32 event; +}; + extern struct kobject *acpi_kobj; extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); void acpi_bus_private_data_handler(acpi_handle, void *); @@ -371,6 +377,7 @@ int acpi_bus_register_driver(struct acpi_driver *driver); void acpi_bus_unregister_driver(struct acpi_driver *driver); int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent, acpi_handle handle, int type); +void acpi_bus_hot_remove_device(void *context); int acpi_bus_trim(struct acpi_device *start, int rmdevice); int acpi_bus_start(struct acpi_device *device); acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); -- cgit v1.2.1