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/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 12e311dc664c..bd5ecbbafab1 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -208,7 +208,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
                 argv [0] = uevent_helper;
                 argv [1] = (char *)subsystem;
                 argv [2] = NULL;
-                call_usermodehelper (argv[0], argv, envp, 0);
+                call_usermodehelper (argv[0], argv, envp, UMH_WAIT_EXEC);
         }
 
 exit: