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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-04 00:42:46 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-02-05 17:41:16 +0100
commit7c2e17714e190b2ef857e7e842464fb47ceca146 (patch)
tree9de5bdbe9ffd639ccb645e4126bd64f1f355d50a /include
parentd3a1ebb063cc45d5f4a5655534b87c3547fd9bbf (diff)
downloadop-kernel-dev-7c2e17714e190b2ef857e7e842464fb47ceca146.zip
op-kernel-dev-7c2e17714e190b2ef857e7e842464fb47ceca146.tar.gz
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')
-rw-r--r--include/acpi/acpixf.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index fea6773..34bad45 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
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