New patch to review for coreboot: lib/compute_ip_checksum: mark data buffer as const

[Aaron Durbin]

Aaron Durbin ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17714

-gerrit

commit f8efb13093bd4ab2cd2aebf39c8394647317b59b
Author: Aaron Durbin 
Date:   Sat Dec 3 21:05:53 2016 -0600

lib/compute_ip_checksum: mark data buffer as const

compute_ip_checksum() doesn't manipulate the data it is passed.
    Therefore, mark it as const.

BUG=chrome-os-partner:56151

Change-Id: I54cff9695a886bacd6314aa441d96aaa7a991101
    Signed-off-by: Aaron Durbin 
---
 src/include/ip_checksum.h     | 2 +-
 src/lib/compute_ip_checksum.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/include/ip_checksum.h b/src/include/ip_checksum.h
index a1e0ffa..f6ef560 100644
--- a/src/include/ip_checksum.h
+++ b/src/include/ip_checksum.h
@@ -1,5 +1,5 @@
 #ifndef IP_CHECKSUM_H
 #define IP_CHECKSUM_H
-unsigned long compute_ip_checksum(void *addr, unsigned long length);
+unsigned long compute_ip_checksum(const void *addr, unsigned long length);
 unsigned long add_ip_checksums(unsigned long offset, unsigned long sum, unsigned long new);
 #endif /* IP_CHECKSUM_H */
diff --git a/src/lib/compute_ip_checksum.c b/src/lib/compute_ip_checksum.c
index 58a6bf1..347b83f 100644
--- a/src/lib/compute_ip_checksum.c
+++ b/src/lib/compute_ip_checksum.c
@@ -1,9 +1,9 @@
 #include <stdint.h>
 #include <ip_checksum.h>

-unsigned long compute_ip_checksum(void *addr, unsigned long length)
+unsigned long compute_ip_checksum(const void *addr, unsigned long length)
 {
-	uint8_t *ptr;
+	const uint8_t *ptr;
    volatile union {
    	uint8_t  byte[2];
    	uint16_t word;