util: fix devnum2devname for devnum == 0

devnum 0 is md0 no md_d-1

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/util.c b/util.c
index a0e4bcf0aac94e46c9995523ebead1b06a2b7131..d49a4edd4a100ed0b6ecc303f2a3f003331ea3cf 100644 (file)
--- a/util.c
+++ b/util.c
@@ -1210,7 +1210,7 @@ int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info)
 char *devnum2devname(int num)
 {
        char name[100];
-       if (num > 0)
+       if (num >= 0)
                sprintf(name, "md%d", num);
        else
                sprintf(name, "md_d%d", -1-num);