1CCW_DEVICE_HALT(9)                The ccw bus               CCW_DEVICE_HALT(9)
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NAME

6       ccw_device_halt - halt I/O request processing
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SYNOPSIS

9       int ccw_device_halt(struct ccw_device * cdev, unsigned long intparm);
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ARGUMENTS

12       cdev
13           target ccw device
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15       intparm
16           interruption parameter; value is only used if no I/O is
17           outstanding, otherwise the intparm associated with the I/O request
18           is returned
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DESCRIPTION

21       ccw_device_halt calls hsch on cdev's subchannel.
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RETURNS

24       0 on success, -ENODEV on device not operational, -EINVAL on invalid
25       device state, -EBUSY on device busy or interrupt pending.
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CONTEXT

28       Interrupts disabled, ccw device lock held
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AUTHOR

31       Cornelia Huck <cornelia.huck@de.ibm.com>
32           Author.
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35Kernel Hackers Manual 3.10         June 2019                CCW_DEVICE_HALT(9)
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