From 9d7c37ad3d73ea3e2ca92413b97ba3fc2c25924f Mon Sep 17 00:00:00 2001
From: imp <imp@FreeBSD.org>
Date: Sat, 25 Nov 2006 22:34:01 +0000
Subject: [PATCH] Clarify what non-zero return values mean.

---
 share/man/man9/config_intrhook.9 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/share/man/man9/config_intrhook.9 b/share/man/man9/config_intrhook.9
index 4a9f331b0628..1cb3b49f4602 100644
--- a/share/man/man9/config_intrhook.9
+++ b/share/man/man9/config_intrhook.9
@@ -87,8 +87,10 @@ Specifically, hooks are run at
 which is immeidately after the scheduler is started,
 and just before the root file system device is discovered.
 .Sh RETURN VALUES
-Zero return values mean success.
-Non-zero return values mean failure.
+A zero return value means the hook was successfully added to the queue
+(with either deferred or immediate execution).
+A non-zero return value means the hook could not be added to the queue
+because it was already on the queue.
 .Sh SEE ALSO
 .Xr DEVICE_ATTACH 9
 .Sh HISTORY