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authorHorst Hummel <horst.hummel@de.ibm.com>2006-04-27 18:40:10 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-28 08:33:48 -0700
commit39ccf95e28765a08a9e01be614695d7c570b4e77 (patch)
tree9a381e8e8afcd3d6048aaae6a7635f137b6951da /drivers/s390/block
parenta3ae39c060be57a4936d2c1d970e4d0c7d320d9c (diff)
downloadop-kernel-dev-39ccf95e28765a08a9e01be614695d7c570b4e77.zip
op-kernel-dev-39ccf95e28765a08a9e01be614695d7c570b4e77.tar.gz
[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/block')
-rw-r--r--drivers/s390/block/dasd.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index a3bfebc..cfb1fff 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);
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