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Commit 350e9120 authored by Peter Oberparleiter's avatar Peter Oberparleiter Committed by Martin Schwidefsky
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[S390] cio: allow setting not-operational devices offline 



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: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 9679baaf

drivers/s390/cio/device.c

+4 −5
Original line number Diff line number Diff line
@@ -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)) {