Commit b5cd99e6 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
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[S390] cio: disallow online setting of device in transient state



Return -EAGAIN on writes to sysfs online attribute if the corresponding
ccw device is in transient state.
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 47593bfa
...@@ -515,7 +515,11 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr, ...@@ -515,7 +515,11 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
int force, ret; int force, ret;
unsigned long i; unsigned long i;
if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0) 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)
return -EAGAIN; return -EAGAIN;
if (cdev->drv && !try_module_get(cdev->drv->owner)) { if (cdev->drv && !try_module_get(cdev->drv->owner)) {
......
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