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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-11-14 18:18:06 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-11-14 18:18:54 +0100 |
| commit | 85acc407bf1c49fb40b8f461c2c7526af736d87e (patch) | |
| tree | 356a407f2f621fc50cba45d0453958e7143738a1 /drivers/s390 | |
| parent | [S390] ftrace: fix kernel stack backchain walking (diff) | |
| download | linux-85acc407bf1c49fb40b8f461c2c7526af736d87e.tar.xz linux-85acc407bf1c49fb40b8f461c2c7526af736d87e.zip | |
[S390] cio: Fix refcount after moving devices.
In ccw_device_move_to_orphanage(), a replacing ccw_device
is searched via get_{disc,orphaned}_ccwdev_by_dev_id()
which obtain a reference on the returned ccw_device.
This reference must be given up again after the device
has been moved to its new parent.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/device.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 4e78c82194b4..4e4008325e28 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -874,11 +874,15 @@ void ccw_device_move_to_orphanage(struct work_struct *work) replacing_cdev = get_disc_ccwdev_by_dev_id(&dev_id, cdev); if (replacing_cdev) { sch_attach_disconnected_device(sch, replacing_cdev); + /* Release reference from get_disc_ccwdev_by_dev_id() */ + put_device(&cdev->dev); return; } replacing_cdev = get_orphaned_ccwdev_by_dev_id(css, &dev_id); if (replacing_cdev) { sch_attach_orphaned_device(sch, replacing_cdev); + /* Release reference from get_orphaned_ccwdev_by_dev_id() */ + put_device(&cdev->dev); return; } sch_create_and_recog_new_device(sch); |