centos man page for ccw_device_halt

CCW_DEVICE_HALT(9)						    The ccw bus 						CCW_DEVICE_HALT(9)

NAME
       ccw_device_halt - halt I/O request processing

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

ARGUMENTS
       cdev
	   target ccw device

       intparm
	   interruption parameter; value is only used if no I/O is outstanding, otherwise the intparm associated with the I/O request is returned

DESCRIPTION
       ccw_device_halt calls hsch on cdev's subchannel.

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

CONTEXT
       Interrupts disabled, ccw device lock held

AUTHOR
       Cornelia Huck <cornelia.huck@de.ibm.com>
	   Author.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014							CCW_DEVICE_HALT(9)