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[S390] cio: allow setting not-operational devices offline

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Accept a request for setting a not-operational device offline.
This way, users can remove devices from Linux which would otherwise
remain unusable until reboot.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter 2009-12-07 12:51:28 +01:00 committed by Martin Schwidefsky
parent 9679baaf85
commit 350e91207b
1 changed files with 4 additions and 5 deletions
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9
drivers/s390/cio/device.c
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@ -529,11 +529,10 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
int force, ret;
unsigned long i;
if ((cdev->private->state != DEV_STATE_OFFLINE &&
cdev->private->state != DEV_STATE_ONLINE &&
cdev->private->state != DEV_STATE_BOXED &&
cdev->private->state != DEV_STATE_DISCONNECTED) ||
atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0)
if (!dev_fsm_final_state(cdev) &&
cdev->private->state != DEV_STATE_DISCONNECTED)
return -EAGAIN;
if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0)
return -EAGAIN;
if (cdev->drv && !try_module_get(cdev->drv->owner)) {