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authorToshi Kani <toshi.kani@hp.com>2012-05-23 20:25:20 -0600
committerLen Brown <len.brown@intel.com>2012-06-04 01:09:19 -0400
commitc4753e57b78b213f2384fa0dbafa348b087114fa (patch)
tree045c893416303dd0a3ea191848597ad401a48e5c /include/acpi
parent275c58d77062bbb85dbeb3843ba04f34aa50cf8e (diff)
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 <toshi.kani@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acpi_bus.h9
1 files changed, 8 insertions, 1 deletions
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);