ccw_device_halt
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Name

ccw_device_halt — halt I/O request processing

Synopsis

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

Arguments

struct ccw_device * cdev

target ccw device

unsigned long 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.

Return

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

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