[coreboot-gerrit] Change in coreboot[master]: cbfs: mcache: Fix end-of-cache check

[Julius Werner (Code Review)]

Hello Furquan Shaikh, Patrick Georgi,

I'd like you to do a code review. Please visit

https://review.coreboot.org/c/coreboot/+/48277

to review the following change.

Change subject: cbfs: mcache: Fix end-of-cache check
......................................................................

cbfs: mcache: Fix end-of-cache check

After the mcache is copied into CBMEM, it has *just* the right size to
fit the final tag with no room to spare. That means the test to check if
we walked over the end must be `end - current >= sizeof(tag)`, not
`end - current > sizeof(tag)`.

Signed-off-by: Julius Werner 
Change-Id: I25a0d774fb3294bb4d15f31f432940bfccc84af0
---
M src/commonlib/bsd/cbfs_mcache.c
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/77/48277/1

diff --git a/src/commonlib/bsd/cbfs_mcache.c b/src/commonlib/bsd/cbfs_mcache.c
index d2f969d..0d5d8e0 100644
--- a/src/commonlib/bsd/cbfs_mcache.c
+++ b/src/commonlib/bsd/cbfs_mcache.c
@@ -95,7 +95,7 @@
    const void *end = mcache + mcache_size;
    const void *current = mcache;

-	while (current + sizeof(uint32_t) < end) {
+	while (current + sizeof(uint32_t) <= end) {
    	const union mcache_entry *entry = current;

if (entry->magic == MCACHE_MAGIC_END)