x86/acpi: simplify updating header checksum
Use acpi_update_checksum() for updating ACPI table header checksum.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 3186e48..b13292c 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -173,7 +173,7 @@
/* (Re)calculate length and checksum */
current = (u32)tcpa + sizeof(struct acpi_tcpa);
header->length = current - (u32)tcpa;
- header->checksum = table_compute_checksum(tcpa, header->length);
+ acpi_update_checksum(header);
acpi_inc(ctx, tcpa->header.length);
acpi_add_table(ctx, tcpa);
@@ -242,7 +242,7 @@
tpm2->lasa = nomap_to_sysmem(lasa);
/* Calculate checksum. */
- header->checksum = table_compute_checksum(tpm2, header->length);
+ acpi_update_checksum(header);
acpi_inc(ctx, tpm2->header.length);
acpi_add_table(ctx, tpm2);
@@ -279,9 +279,7 @@
* patched the GNVS address. Set the checksum to zero since it
* is part of the region being checksummed.
*/
- ctx->dsdt->checksum = 0;
- ctx->dsdt->checksum = table_compute_checksum((void *)ctx->dsdt,
- ctx->dsdt->length);
+ acpi_update_checksum(ctx->dsdt);
}
/* Fill in platform-specific global NVS variables */
@@ -330,8 +328,7 @@
hpet->number = 0;
hpet->min_tick = 0; /* HPET_MIN_TICKS */
- header->checksum = table_compute_checksum(hpet,
- sizeof(struct acpi_hpet));
+ acpi_update_checksum(header);
return 0;
}