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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

February 2017 Kernel Hackers Manual 3.16