Discard devnum in favour of devnm

We widely use a "devnum" which is 0 or +ve for md%d devices
and -ve for md_d%d devices.
But I want to be able to use md_%s device names.

So get rid of devnum (a number) and use devnm (a 32char string).
eg.
  md0
  md_d2
  md_home

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/super0.c b/super0.c
index bc95fb66..1f4dc750 100644
--- a/super0.c
+++ b/super0.c
@@ -953,7 +953,7 @@ static struct supertype *match_metadata_desc0(char *arg)
 {
 	struct supertype *st = xcalloc(1, sizeof(*st));
 
-	st->container_dev = NoMdDev;
+	st->container_devnm[0] = 0;
 	st->ss = &super0;
 	st->info = NULL;
 	st->minor_version = 90;