From 600b5d163d7434332539cac7be00f649cbbfedcc Mon Sep 17 00:00:00 2001
From: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Date: Wed, 1 Feb 2006 03:06:35 -0800
Subject: [PATCH] s390: ccw_device_probe_console return value

The return code of ccw_device_probe_console() is not properly handled.  It
should only return a valid ccw device pointer or a error value converted by
ERR_PTR.  Fix the console driver code to check with IS_ERR instead against
NULL.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
 drivers/s390/char/con3215.c | 3 ++-
 drivers/s390/char/con3270.c | 3 ++-
 drivers/s390/cio/device.c   | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

(limited to 'drivers')

diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 1f060914cfa..606f6ad285a 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/console.h>
 #include <linux/interrupt.h>
+#include <linux/err.h>
 
 #include <linux/slab.h>
 #include <linux/bootmem.h>
@@ -864,7 +865,7 @@ con3215_init(void)
 	}
 
 	cdev = ccw_device_probe_console();
-	if (!cdev)
+	if (IS_ERR(cdev))
 		return -ENODEV;
 
 	raw3215[0] = raw = (struct raw3215_info *)
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index c570a9f6ce9..ef607a1de55 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -15,6 +15,7 @@
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/types.h>
+#include <linux/err.h>
 
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
@@ -597,7 +598,7 @@ con3270_init(void)
 	}
 
 	cdev = ccw_device_probe_console();
-	if (!cdev)
+	if (IS_ERR(cdev))
 		return -ENODEV;
 	rp = raw3270_setup_console(cdev);
 	if (IS_ERR(rp))
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index ceebf08e095..0b30921ce60 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1012,7 +1012,7 @@ ccw_device_probe_console(void)
 	int ret;
 
 	if (xchg(&console_cdev_in_use, 1) != 0)
-		return NULL;
+		return ERR_PTR(-EBUSY);
 	sch = cio_probe_console();
 	if (IS_ERR(sch)) {
 		console_cdev_in_use = 0;
-- 
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