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[S390] cio: handle busy subchannel in ccw_device_move_to_sch
authorSebastian Ott <sebott@linux.vnet.ibm.com>
Mon, 7 Dec 2009 11:51:37 +0000 (12:51 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Mon, 7 Dec 2009 11:51:32 +0000 (12:51 +0100)
Try to disable the old subchannel before we ask the driver core
to move the attached device to a new parent. This way we can use
the QUIESCE state during shutdown which prevents a possible use
after free situation in some error cases.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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