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| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-04 00:42:46 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-05 17:41:16 +0100 |
| commit | 7c2e17714e190b2ef857e7e842464fb47ceca146 (patch) | |
| tree | 9de5bdbe9ffd639ccb645e4126bd64f1f355d50a /include/acpi | |
| parent | ACPI / hotplug / PCI: Do not pass ACPI handle to hotplug_event() (diff) | |
| download | linux-dev-7c2e17714e190b2ef857e7e842464fb47ceca146.tar.xz linux-dev-7c2e17714e190b2ef857e7e842464fb47ceca146.zip | |
ACPICA: Introduce acpi_get_data_full() and rework acpi_get_data()
Introduce a new function, acpi_get_data_full(), working in analogy
with acpi_get_data() except that it can execute a callback provided
as its 4th argument right after acpi_ns_get_attached_data() has
returned a success.
That will allow Linux to reference count the object pointed to by
*data before the namespace mutex is released so as to ensure that it
will not be freed going forward until the reference to it acquired
by acpi_get_data_full() is dropped.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/acpixf.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index fea6773f87fc..34bad459c11b 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -230,6 +230,10 @@ acpi_attach_data(acpi_handle object, acpi_object_handler handler, void *data); acpi_status acpi_detach_data(acpi_handle object, acpi_object_handler handler); acpi_status +acpi_get_data_full(acpi_handle object, acpi_object_handler handler, void **data, + void (*callback)(void *)); + +acpi_status acpi_get_data(acpi_handle object, acpi_object_handler handler, void **data); acpi_status |