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acpi: Create subtable parsing infrastructure

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Parsing entries in an ACPI table had assumed a generic header
structure. There is no standard ACPI header, though, so less common
layouts with different field sizes required custom parsers to go through
their subtable entry list.

Create the infrastructure for adding different table types so parsing
the entries array may be more reused for all ACPI system tables and
the common code doesn't need to be duplicated.

Reviewed-by: Rafael J. Wysocki <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
Tested-by: Jonathan Cameron <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Tested-by: Brice Goglin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Keith Busch 2019-03-11 14:55:57 -06:00 • committed by Greg Kroah-Hartman
commit 60574d1e05
15 changed files with 113 additions and 63 deletions
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2
drivers/mailbox/pcc.c
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@ -382,7 +382,7 @@ static const struct mbox_chan_ops pcc_chan_ops = {
*
* This gets called for each entry in the PCC table.
*/
static int parse_pcc_subspace(struct acpi_subtable_header *header,
static int parse_pcc_subspace(union acpi_subtable_headers *header,
const unsigned long end)
{
struct acpi_pcct_subspace *ss = (struct acpi_pcct_subspace *) header;