[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>
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 1f06091..606f6ad 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 @@
 	}
 
 	cdev = ccw_device_probe_console();
-	if (!cdev)
+	if (IS_ERR(cdev))
 		return -ENODEV;
 
 	raw3215[0] = raw = (struct raw3215_info *)