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)
