From cd7b80079b120406de902ee1eaa2dbdaa867dada Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@osdl.org>
Date: Fri, 19 Aug 2005 23:21:01 +0200
Subject: [PATCH] [WATCHDOG]
 driver-for-ibm-automatic-server-restart-watchdog-fix

Add fixed timeout comments

Cc: Andrey Panin <pazke@donpac.ru>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
 drivers/char/watchdog/ibmasr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/char/watchdog/ibmasr.c b/drivers/char/watchdog/ibmasr.c
index a32c073d29bc..4f90015be7dd 100644
--- a/drivers/char/watchdog/ibmasr.c
+++ b/drivers/char/watchdog/ibmasr.c
@@ -267,7 +267,10 @@ static int asr_ioctl(struct inode *inode, struct file *file,
 			asr_toggle();
 			return 0;
 
-
+		/*
+		 * The hardware has a fixed timeout value, so WDIOC_SETTIMEOUT
+		 * is a noop and WDIOC_GETTIMEOUT always returns 256.
+		 */
 		case WDIOC_SETTIMEOUT:
 			if (get_user(heartbeat, p))
 				return -EFAULT;