acpi: widen acpi_evaluate_dsm() revision and function-index arguments
The ACPI specification states that arguments "Revision ID" and "Function
Index" to a _DSM are type "Integer." Type Integers are 64 bit
quantities.
The function evaluate_dsm specifies these types as simple "int" which
are 32 bits. Widen type passed to acpi_evaluate_dsm and its callers and
derived callers to pass correct type.
acpi_check_dsm and acpi_evaluate_dsm_typed had similar issue and were
corrected as well.
This is in preparation for libnvdimm implementing a generic _DSM
passthrough facility to have the capacity to pass 64-bit values as the
ACPI specification allows.
[djbw: clarify the changelog, add rationale]
Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index 050673f..e854dea 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -625,7 +625,7 @@
* some old BIOSes do expect a buffer or an integer etc.
*/
union acpi_object *
-acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, int rev, int func,
+acpi_evaluate_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 func,
union acpi_object *argv4)
{
acpi_status ret;
@@ -674,7 +674,7 @@
* functions. Currently only support 64 functions at maximum, should be
* enough for now.
*/
-bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, int rev, u64 funcs)
+bool acpi_check_dsm(acpi_handle handle, const u8 *uuid, u64 rev, u64 funcs)
{
int i;
u64 mask = 0;