From: Julio Faracco <jcfaracco@xxxxxxxxx> commit 903bd067faa837fddb6e5c8b740c3374dc582f04 upstream. The function `xbc_show_list should` handle the keys during the composition. Even the errors returned by the compose function. Instead of removing the `ret` variable, it should save the value and show the exact error. This missing variable is causing a compilation issue also. Link: https://lkml.kernel.org/r/163077087861.222577.12884543474750968146.stgit@devnote2 Fixes: e5efaeb8a8f5 ("bootconfig: Support mixing a value and subkeys under a key") Signed-off-by: Julio Faracco <jcfaracco@xxxxxxxxx> Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/bootconfig/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/tools/bootconfig/main.c +++ b/tools/bootconfig/main.c @@ -111,9 +111,11 @@ static void xbc_show_list(void) char key[XBC_KEYLEN_MAX]; struct xbc_node *leaf; const char *val; + int ret; xbc_for_each_key_value(leaf, val) { - if (xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX) < 0) { + ret = xbc_node_compose_key(leaf, key, XBC_KEYLEN_MAX); + if (ret < 0) { fprintf(stderr, "Failed to compose key %d\n", ret); break; }
