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ACPICA: Tables: Cleanup RSDP signature codes. 

This patch introduces new macors to handle RSDP signature and cleans up the
affected codes.  Lv Zheng.
Some updates are only used for ACPICA utilities which are not shipped in
the kernel yet.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Lv Zheng 2013-09-23 09:52:34 +08:00 committed by Rafael J. Wysocki
parent 94d4be6773
commit cacba86573
3 changed files with 7 additions and 3 deletions
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2
drivers/acpi/acpica/tbprint.c
View File

@ -138,7 +138,7 @@ acpi_tb_print_table_header(acpi_physical_address address,
ACPI_INFO((AE_INFO, "%4.4s %p %05X",
header->signature, ACPI_CAST_PTR(void, address),
header->length));
} else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) {
} else if (ACPI_VALIDATE_RSDP_SIG(header->signature)) {
/* RSDP has no common fields */

3
drivers/acpi/acpica/tbxfroot.c
View File

@ -68,8 +68,7 @@ acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp)
* Note: Sometimes there exists more than one RSDP in memory; the valid
* RSDP has a valid checksum, all others have an invalid checksum.
*/
if (ACPI_STRNCMP((char *)rsdp->signature, ACPI_SIG_RSDP,
sizeof(ACPI_SIG_RSDP) - 1) != 0) {
if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) {
/* Nope, BAD Signature */

5
include/acpi/actypes.h
View File

@ -474,6 +474,11 @@ typedef u64 acpi_integer;
#define ACPI_MOVE_NAME(dest,src) (ACPI_STRNCPY (ACPI_CAST_PTR (char, (dest)), ACPI_CAST_PTR (char, (src)), ACPI_NAME_SIZE))
#endif
/* Support for the special RSDP signature (8 characters) */
#define ACPI_VALIDATE_RSDP_SIG(a) (!ACPI_STRNCMP (ACPI_CAST_PTR (char, (a)), ACPI_SIG_RSDP, 8))
#define ACPI_MAKE_RSDP_SIG(dest) (ACPI_MEMCPY (ACPI_CAST_PTR (char, (dest)), ACPI_SIG_RSDP, 8))
/*******************************************************************************
*
* Miscellaneous constants