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[S390] cio: fix double free after failed device initialization 

If io_subchannel_initialize_dev fails it will release the only
reference to the ccw device therefore the caller should not
kfree this device since this is done in the release function.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2009-08-23 18:09:04 +02:00 committed by Martin Schwidefsky
parent 3edf2fb9d8
commit 06739a8ad3
1 changed files with 1 additions and 3 deletions
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4
drivers/s390/cio/device.c
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@ -772,10 +772,8 @@ static struct ccw_device * io_subchannel_create_ccwdev(struct subchannel *sch)
cdev = io_subchannel_allocate_dev(sch);
if (!IS_ERR(cdev)) {
ret = io_subchannel_initialize_dev(sch, cdev);
if (ret) {
kfree(cdev);
if (ret)
cdev = ERR_PTR(ret);
}
}
return cdev;
}