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ACPI: tables: Simplify PPTT leaf node detection

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ACPI 6.3 bumps the PPTT table revision and adds a LEAF_NODE flag.

This allows us to avoid a second pass through the table to assure
that the node in question is a leaf.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jeremy Linton 2019-03-01 12:52:21 -06:00 committed by Rafael J. Wysocki
parent d276709ce6
commit 4909e6df21
1 changed files with 3 additions and 0 deletions
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drivers/acpi/pptt.c
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@ -209,6 +209,9 @@ static int acpi_pptt_leaf_node(struct acpi_table_header *table_hdr,
struct acpi_pptt_processor *cpu_node; struct acpi_pptt_processor *cpu_node;
u32 proc_sz; u32 proc_sz;
if (table_hdr->revision > 1)
return (node->flags & ACPI_PPTT_ACPI_LEAF_NODE);
table_end = (unsigned long)table_hdr + table_hdr->length; table_end = (unsigned long)table_hdr + table_hdr->length;
node_entry = ACPI_PTR_DIFF(node, table_hdr); node_entry = ACPI_PTR_DIFF(node, table_hdr);
entry = ACPI_ADD_PTR(struct acpi_subtable_header, table_hdr, entry = ACPI_ADD_PTR(struct acpi_subtable_header, table_hdr,