From: Stefan Reinauer <reinauer@chromium.org>
Date: Mon, 17 Oct 2011 15:58:27 +0000 (-0700)
Subject: nvramtool: Fix CMOS checksum to match coreboot (and /dev/nvram)
X-Git-Url: http://wien.tomnetworks.com/gitweb/?p=coreboot.git;a=commitdiff_plain;h=c31c4de681738fc264333cb12aecdb995b119a94

nvramtool: Fix CMOS checksum to match coreboot (and /dev/nvram)

Change-Id: I28b0dbad36403a31be83581107f40b3ca1332dcc
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/287
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
---

diff --git a/util/nvramtool/cmos_ops.c b/util/nvramtool/cmos_ops.c
index 2bbc8a1df..91c9f451a 100644
--- a/util/nvramtool/cmos_ops.c
+++ b/util/nvramtool/cmos_ops.c
@@ -210,7 +210,7 @@ uint16_t cmos_checksum_compute(void)
 	for (i = cmos_checksum_start; i <= cmos_checksum_end; i++)
 		sum += cmos_read_byte(i);
 
-	return ~((uint16_t) (sum & 0xffff));
+	return (uint16_t)(sum & 0xffff);
 }
 
 /****************************************************************************