csr1212: add check for !valid

Don't read the keyval if there's already a valid one in place.  May not be
necessary but shouldn't hurt.

Signed-off-by: Jody McIntyre <scjdy@steamballoon.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 4812d59e8976..15773544234b 100644
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -1618,7 +1618,8 @@ int csr1212_parse_csr(struct csr1212_csr *csr)
          * and make cache regions for them */
         for (dentry = csr->root_kv->value.directory.dentries_head;
              dentry; dentry = dentry->next) {
-                if (dentry->kv->key.id == CSR1212_KV_ID_EXTENDED_ROM) {
+                if (dentry->kv->key.id == CSR1212_KV_ID_EXTENDED_ROM &&
+                        !dentry->kv->valid) {
                         ret = _csr1212_read_keyval(csr, dentry->kv);
                         if (ret != CSR1212_SUCCESS)
                                 return ret;