[PATCH 1/1] acpi: fix initial RSDT and XSDT size

[Heinrich Schuchardt]

When creating the RSDT and the XSDT table they contain no entries.
The table size therefore must equal the header size.

Without this change a NULL deference has been observed in
acpi_find_table() when running `ut dm` on sandbox64_defconfig
executed via `sudo ./u-boot -D`.

Fixes: 94ba15a3f13f ("x86: Move base tables to a writer function")
Fixes: 7e586f69070d ("acpi: Put table-setup code in its own function")
Fixes: ab5efd576c4e ("x86: acpi: Adjust order in acpi_table.c")
Fixes: 867bcb63e79f ("x86: Generate a valid ACPI table")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
---
 lib/acpi/base.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/acpi/base.c b/lib/acpi/base.c
index 5c755b14c16..01ebad8994a 100644
--- a/lib/acpi/base.c
+++ b/lib/acpi/base.c
@@ -44,7 +44,7 @@ static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
 
 	/* Fill out header fields */
 	acpi_fill_header(header, "RSDT");
-	header->length = sizeof(struct acpi_rsdt);
+	header->length = sizeof(struct acpi_table_header);
 	header->revision = 1;
 
 	/* Entries are filled in later, we come with an empty set */
@@ -59,7 +59,7 @@ static void acpi_write_xsdt(struct acpi_xsdt *xsdt)
 
 	/* Fill out header fields */
 	acpi_fill_header(header, "XSDT");
-	header->length = sizeof(struct acpi_xsdt);
+	header->length = sizeof(struct acpi_table_header);
 	header->revision = 1;
 
 	/* Entries are filled in later, we come with an empty set */
-- 
2.53.0