[PATCH 1/3] lib: utils/cache: Handle last-level cache correctly in fdt_cache_add()

[Nick Hu]

The fdt_cache_add() helper attempts to retrieve the next-level cache and
returns SBI_ENOENT when there is none. Since this condition only indicates
that the current cache is the last-level cache, the helper should not
treat it as an error.

Signed-off-by: Nick Hu <nick.hu at sifive.com>
---
 lib/utils/cache/fdt_cache.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/utils/cache/fdt_cache.c b/lib/utils/cache/fdt_cache.c
index aeaa613830960b67bf5f512a101f0242d8692872..2a9e8a6dd53c008eec8f319d0e19c56ea1d11a1a 100644
--- a/lib/utils/cache/fdt_cache.c
+++ b/lib/utils/cache/fdt_cache.c
@@ -23,7 +23,9 @@ int fdt_cache_add(const void *fdt, int noff, struct cache_device *dev)
 	sbi_dprintf("%s: %s\n", __func__, dev->name);
 
 	rc = fdt_next_cache_get(fdt, noff, &dev->next);
-	if (rc)
+	if (rc == SBI_ENOENT)
+		dev->next = NULL;
+	else if (rc)
 		return rc;
 
 	return cache_add(dev);

-- 
2.34.1