[U-Boot] [PATCH v2 10/18] x86: acpi: Remove the unnecessary checksum calculation of DSDT

Bin Meng bmeng.cn at gmail.com
Wed May 11 16:45:04 CEST 2016


The generated AmlCode[] from IASL already has the calculated DSDT
table checksum in place. No need for us to calculate it again.

Signed-off-by: Bin Meng <bmeng.cn at gmail.com>

---

Changes in v2:
- New patch to remove the unnecessary checksum calculation of DSDT

 arch/x86/lib/acpi_table.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index a9fe243..05c958d 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -382,12 +382,6 @@ u32 write_acpi_tables(u32 start)
 			(char *)&AmlCode + sizeof(struct acpi_table_header),
 			dsdt->length - sizeof(struct acpi_table_header));
 		current += dsdt->length - sizeof(struct acpi_table_header);
-
-		/* (Re)calculate length and checksum */
-		dsdt->length = current - (u32)dsdt;
-		dsdt->checksum = 0;
-		dsdt->checksum = table_compute_checksum((void *)dsdt,
-				dsdt->length);
 	}
 	current = ALIGN(current, 16);
 
-- 
1.8.2.1



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