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[PATCH] s390: ccw_device_probe_console return value

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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>
This commit is contained in:
Peter Oberparleiter 2006-02-01 03:06:35 -08:00 committed by Linus Torvalds
parent 3633b0475e
commit 600b5d163d
3 changed files with 5 additions and 3 deletions
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3
drivers/s390/char/con3215.c
View File

@ -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 *)

3
drivers/s390/char/con3270.c
View File

@ -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))

2
drivers/s390/cio/device.c
View File

@ -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;