On Fri, Mar 01, 2019 at 12:52:21PM -0600, Jeremy Linton wrote: > 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. >
Reviewed-by:Sudeep Holla <[email protected]> -- Regards, Sudeep > Signed-off-by: Jeremy Linton <[email protected]> > --- > drivers/acpi/pptt.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c > index ad31c50de3be..065c4fc245d1 100644 > --- a/drivers/acpi/pptt.c > +++ b/drivers/acpi/pptt.c > @@ -209,6 +209,9 @@ static int acpi_pptt_leaf_node(struct acpi_table_header > *table_hdr, > struct acpi_pptt_processor *cpu_node; > 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; > node_entry = ACPI_PTR_DIFF(node, table_hdr); > entry = ACPI_ADD_PTR(struct acpi_subtable_header, table_hdr, > -- > 2.20.1 >
