usermodehelper: Tidy up waiting

Rather than using a tri-state integer for the wait flag in
call_usermodehelper_exec, define a proper enum, and use that.  I've
preserved the integer values so that any callers I've missed should
still work OK.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Andi Kleen <ak@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Joel Becker <joel.becker@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Srivatsa Vaddagiri <vatsa@in.ibm.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: David Howells <dhowells@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index a786e7863200..1ea2f86f7683 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -125,7 +125,7 @@ static void br_stp_start(struct net_bridge *br)
         char *argv[] = { BR_STP_PROG, br->dev->name, "start", NULL };
         char *envp[] = { NULL };
 
-        r = call_usermodehelper(BR_STP_PROG, argv, envp, 1);
+        r = call_usermodehelper(BR_STP_PROG, argv, envp, UMH_WAIT_PROC);
         if (r == 0) {
                 br->stp_enabled = BR_USER_STP;
                 printk(KERN_INFO "%s: userspace STP started\n", br->dev->name);