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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2009-12-07 12:51:35 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2009-12-07 12:51:32 +0100 |
| commit | 56e6b796fe9b99287648fc5686aae00106b37bab (patch) | |
| tree | f0c75986905f3ff01ec1c801843f94923509af06 /drivers/s390/char/vmcp.h | |
| parent | [S390] cio: add per device initialization status flag (diff) | |
| download | linux-56e6b796fe9b99287648fc5686aae00106b37bab.tar.xz linux-56e6b796fe9b99287648fc5686aae00106b37bab.zip | |
[S390] cio: fix quiesce state
DEV_STATE_QUIESCE is used to stop all IO on a busy subchannel.
This patch fixes the following problems related to the QUIESCE
state:
* Fix a potential race condition which could occur when the
resulting state was DEV_STATE_OFFLINE.
* Add missing locking around cio_disable_subchannel,
ccw_device_cancel_halt_clear and the cdev's handler.
* Loop until we know for sure that the subchannel is disabled.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char/vmcp.h')
0 files changed, 0 insertions, 0 deletions