Name
ccw_device_clear —
terminate I/O request processing
Synopsis
int ccw_device_clear ( | 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_clear calls csch on cdev's subchannel.
Returns
0 on success,
-ENODEV on device not operational,
-EINVAL on invalid device state.
Context
Interrupts disabled, ccw device lock held