From: Wang Chen <wangchen@cn.fujitsu.com>
Date: Tue, 24 Jun 2008 08:59:02 +0000 (+0800)
Subject: kobject: Transmit return value of call_usermodehelper() to caller
X-Git-Tag: v2.6.27-rc1~866^2~9
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=0ad1d6f37cc3bb234c6e7ae30e40d1d40b9aa258;p=linux-2.6-omap-h63xx.git

kobject: Transmit return value of call_usermodehelper() to caller

kobject_uevent_env() drops the return value of call_usermodehelper().
It will make upper caller, such as dm_send_uevents(), to lose error
information.

BTW, Previously kobject_uevent_env() transmitted return of
call_usermodehelper() to callers, but
commit	5f123fbd80f4f788554636f02bf73e40f914e0d6
"[PATCH] merge kobject_uevent and kobject_hotplug" removed it.

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Cc: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2fa545a6316..9f8d599459d 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -245,7 +245,8 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
 		if (retval)
 			goto exit;
 
-		call_usermodehelper(argv[0], argv, env->envp, UMH_WAIT_EXEC);
+		retval = call_usermodehelper(argv[0], argv,
+					     env->envp, UMH_WAIT_EXEC);
 	}
 
 exit: