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path: root/drivers/s390/cio
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Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/device.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 868f8c6b053..e47aa3f0476 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -515,7 +515,11 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
int force, ret;
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;
if (cdev->drv && !try_module_get(cdev->drv->owner)) {