[S390] cio: add per device initialization status flag
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Mon, 7 Dec 2009 11:51:34 +0000 (12:51 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Mon, 7 Dec 2009 11:51:32 +0000 (12:51 +0100)
commit24a1872d6411c7cce82c0888a4fbea23e993e051
tree459d07c0b4da081a068b3e78cb1634876575c254
parent7d253b9a1aaf5192808e641659f4feb122faa536
[S390] cio: add per device initialization status flag

The function ccw_device_unregister has to ensure to remove
all references obtained by device_add and device_initialize.
Unfortunately it gets called for devices which are
1) uninitialized, 2) initialized but unregistered, and
3) registered devices. To distinguish 1) and 2) this patch
introduces a new flag "initialized", which is 1 as long as we
hold the initial device reference.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/cio/device.c
drivers/s390/cio/io_sch.h