From: Lv Zheng Date: Mon, 23 Sep 2013 01:52:34 +0000 (+0800) Subject: ACPICA: Tables: Cleanup RSDP signature codes. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=cacba8657351f709ab3cb53a2b207f513f14054c;p=linux-beck.git 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 Signed-off-by: Bob Moore Reviewed-by: Len Brown Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/acpi/acpica/tbprint.c b/drivers/acpi/acpica/tbprint.c index 499759a23b41..9a47715af1f3 100644 --- a/drivers/acpi/acpica/tbprint.c +++ b/drivers/acpi/acpica/tbprint.c @@ -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 */ diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 948c95e80d44..1c95fabbe6a4 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -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 */ diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 850f75027fb6..54006720af8e 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -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