The patch titled
s390: dasd ioctl never returns
has been added to the -mm tree. Its filename is
s390-dasd-ioctl-never-returns.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
From: Horst Hummel <horst.hummel@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/s390/block/dasd.c | 5 +++++
1 files changed, 5 insertions(+)
diff -puN drivers/s390/block/dasd.c~s390-dasd-ioctl-never-returns drivers/s390/block/dasd.c
--- 25/drivers/s390/block/dasd.c~s390-dasd-ioctl-never-returns Mon Apr 24 16:45:59 2006
+++ 25-akpm/drivers/s390/block/dasd.c Mon Apr 24 16:45:59 2006
@@ -315,6 +315,11 @@ dasd_increase_state(struct dasd_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);
_
Patches currently in -mm which might be from horst.hummel@xxxxxxxxxx are
s390-dasd-ioctl-never-returns.patch
s390-dasd-device-identifiers.patch
-
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