[PATCH] IPMI: return correct value from ipmi_write

This patch corrects the handling of write operations to the IPMI watchdog
to work as intended by returning the number of characters actually
processed. Without this patch, an "echo V >/dev/watchdog" enables the
watchdog if IPMI is providing the watchdog function.
Signed-off-by: Mark Rustad <MRustad@gmail.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/char/ipmi/ipmi_watchdog.c

@@ -755,9 +755,8 @@ static ssize_t ipmi_write(struct file *file,
 		rv = ipmi_heartbeat();
 		if (rv)
 			return rv;
-		return 1;
 	}
-	return 0;
+	return len;
 }
 
 static ssize_t ipmi_read(struct file *file,