[PATCH 3.14 33/51] ACPICA: Utilities: Cleanup to enforce ACPI_PHYSADDR_TO_PTR()/ACPI_PTR_TO_PHYSADDR().

Greg Kroah-Hartman
2015-05-15T23:34:39Z

From: Lv Zheng <lv.zheng@intel.com>

commit 6d3fd3cc33d50e4c0d0c0bd172de02caaec3127c upstream.

ACPICA commit 154f6d074dd38d6ebc0467ad454454e6c5c9ecdf

There are code pieces converting pointers using "(acpi_physical_address) x"
or "ACPI_CAST_PTR (t, x)" formats, this patch cleans up them.

Known issues:
1. Cleanup of "(ACPI_PHYSICAL_ADDRRESS) x" for a table field
For the conversions around the table fields, it is better to fix it with
alignment also fixed. So this patch doesn't modify such code. There
should be no functional problem by leaving them unchanged.

Link: https://github.com/acpica/acpica/commit/154f6d07
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Dirk Behme <dirk.behme@gmail.com>
Signed-off-by: George G. Davis <george_davis@mentor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/acpi/acpica/dsopcode.c | 3 +--
drivers/acpi/acpica/tbinstal.c | 5 ++---
2 files changed, 3 insertions(+), 5 deletions(-)

--- a/drivers/acpi/acpica/dsopcode.c
+++ b/drivers/acpi/acpica/dsopcode.c
@@ -539,8 +539,7 @@ acpi_ds_eval_table_region_operands(struc
return_ACPI_STATUS(AE_NOT_EXIST);
}

- obj_desc->region.address =
- (acpi_physical_address) ACPI_TO_INTEGER(table);
+ obj_desc->region.address = ACPI_PTR_TO_PHYSADDR(table);
obj_desc->region.length = table->length;

ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -294,8 +294,7 @@ struct acpi_table_header *acpi_tb_table_
ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
"%4.4s %p Attempted physical table override failed",
table_header->signature,
- ACPI_CAST_PTR(void,
- table_desc->address)));
+ ACPI_PHYSADDR_TO_PTR(table_desc->address)));
return (NULL);
}

@@ -311,7 +310,7 @@ finish_override:
ACPI_INFO((AE_INFO,
"%4.4s %p %s table override, new table: %p",
table_header->signature,
- ACPI_CAST_PTR(void, table_desc->address),
+ ACPI_PHYSADDR_TO_PTR(table_desc->address),
override_type, new_table));

/* We can now unmap/delete the original table (if fully mapped) */