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| author | Horst Hummel <horst.hummel@de.ibm.com> | 2006-04-28 03:40:10 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-28 17:33:48 +0200 |
| commit | 39ccf95e28765a08a9e01be614695d7c570b4e77 (patch) | |
| tree | 9a381e8e8afcd3d6048aaae6a7635f137b6951da /drivers/s390 | |
| parent | [PATCH] s390: qdio memory allocations (diff) | |
| download | linux-39ccf95e28765a08a9e01be614695d7c570b4e77.tar.xz linux-39ccf95e28765a08a9e01be614695d7c570b4e77.zip | |
[PATCH] s390: dasd ioctl never returns
The dasd state machine is not designed to enable an unformatted device, since
'unformatted' is a final state. The BIODASDENABLE ioctl calls
dasd_enable_device() which never returns if the device is in this special
state. Return -EPERM in dasd_increase_state for unformatted devices to make
dasd_enable_device terminate. Note: To get such an unformatted device online
it has to be re-analyzed. This means that the device needs to be disabled
prior to re-enablement.
Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/block/dasd.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index a3bfebcf31ef..cfb1fff3787c 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -315,6 +315,11 @@ dasd_increase_state(struct dasd_device *device) rc = dasd_state_basic_to_ready(device); if (!rc && + device->state == DASD_STATE_UNFMT && + device->target > DASD_STATE_UNFMT) + rc = -EPERM; + + if (!rc && device->state == DASD_STATE_READY && device->target >= DASD_STATE_ONLINE) rc = dasd_state_ready_to_online(device); |