From: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Date: Tue, 26 Dec 2023 10:22:28 +0000 (+0100)
Subject: lib: smbios: verify_checksum() is duplicate
X-Git-Url: http://git.dujemihanovic.xyz/repo?a=commitdiff_plain;h=dc2fe5d84ea1f285fa0ad1052deee742c8f593e3;p=u-boot.git

lib: smbios: verify_checksum() is duplicate

The function verify_checksum() duplicates what table_compute_checksum()
does. Replace it. table_compute_checksum() is always compiled.

Fixes: 415eab0655a8 ("smbios: add parsing API")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
---

diff --git a/lib/smbios-parser.c b/lib/smbios-parser.c
index b578c30840..4a3732bcf2 100644
--- a/lib/smbios-parser.c
+++ b/lib/smbios-parser.c
@@ -6,21 +6,7 @@
 #define LOG_CATEGORY	LOGC_BOOT
 
 #include <smbios.h>
-
-static inline int verify_checksum(const struct smbios_entry *e)
-{
-	/*
-	 * Checksums for SMBIOS tables are calculated to have a value, so that
-	 * the sum over all bytes yields zero (using unsigned 8 bit arithmetic).
-	 */
-	u8 *byte = (u8 *)e;
-	u8 sum = 0;
-
-	for (int i = 0; i < e->length; i++)
-		sum += byte[i];
-
-	return sum;
-}
+#include <tables_csum.h>
 
 const struct smbios_entry *smbios_entry(u64 address, u32 size)
 {
@@ -32,7 +18,7 @@ const struct smbios_entry *smbios_entry(u64 address, u32 size)
 	if (memcmp(entry->anchor, "_SM_", 4))
 		return NULL;
 
-	if (verify_checksum(entry))
+	if (table_compute_checksum(entry, entry->length))
 		return NULL;
 
 	return entry;