Messages in this thread Patch in this message | | | Subject | [PATCH] ACPICA: Eliminate double call to acpi_ns_get_parent_node in acpi_get_parent | From | Alex Chiang <> | Date | Mon, 18 May 2009 21:23:24 -0600 |
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Cache the value of the parent node so we don't have to look it up twice.
Cc: Robert Moore <robert.moore@intel.com> Signed-off-by: Alex Chiang <achiang@hp.com> ---
drivers/acpi/acpica/nsxfobj.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c index 1c7efc1..1cd8f15 100644 --- a/drivers/acpi/acpica/nsxfobj.c +++ b/drivers/acpi/acpica/nsxfobj.c @@ -161,7 +161,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_type) ******************************************************************************/ acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle) { - struct acpi_namespace_node *node; + struct acpi_namespace_node *node, *parent_node; acpi_status status; if (!ret_handle) { @@ -189,12 +189,12 @@ acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle) /* Get the parent entry */ - *ret_handle = - acpi_ns_convert_entry_to_handle(acpi_ns_get_parent_node(node)); + parent_node = acpi_ns_get_parent_node(node); + *ret_handle = acpi_ns_convert_entry_to_handle(parent_node); /* Return exception if parent is null */ - if (!acpi_ns_get_parent_node(node)) { + if (!parent_node) { status = AE_NULL_ENTRY; }
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