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[S390] cio: Add css_driver_{register,unregister}. 

Add wrapper functions for driver_register and driver_unregister so
that css drivers don't need to muck with struct device_driver
directly.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
hifive-unleashed-5.1
Cornelia Huck 2008-01-26 14:10:41 +01:00 committed by Martin Schwidefsky
parent 98c13c283a
commit 25b7bb5838
3 changed files with 35 additions and 6 deletions
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27
drivers/s390/cio/css.c
View File

@ -837,6 +837,33 @@ struct bus_type css_bus_type = {
.shutdown = css_shutdown,
};
/**
* css_driver_register - register a css driver
* @cdrv: css driver to register
*
* This is mainly a wrapper around driver_register that sets name
* and bus_type in the embedded struct device_driver correctly.
*/
int css_driver_register(struct css_driver *cdrv)
{
cdrv->drv.name = cdrv->name;
cdrv->drv.bus = &css_bus_type;
return driver_register(&cdrv->drv);
}
EXPORT_SYMBOL_GPL(css_driver_register);
/**
* css_driver_unregister - unregister a css driver
* @cdrv: css driver to unregister
*
* This is a wrapper around driver_unregister.
*/
void css_driver_unregister(struct css_driver *cdrv)
{
driver_unregister(&cdrv->drv);
}
EXPORT_SYMBOL_GPL(css_driver_unregister);
subsys_initcall(init_channel_subsystem);
MODULE_LICENSE("GPL");

4
drivers/s390/cio/css.h
View File

@ -132,6 +132,7 @@ struct css_driver {
int (*probe)(struct subchannel *);
int (*remove)(struct subchannel *);
void (*shutdown)(struct subchannel *);
const char *name;
};
#define to_cssdriver(n) container_of(n, struct css_driver, drv)
@ -141,6 +142,9 @@ struct css_driver {
*/
extern struct bus_type css_bus_type;
extern int css_driver_register(struct css_driver *);
extern void css_driver_unregister(struct css_driver *);
extern void css_sch_device_unregister(struct subchannel *);
extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);
extern int css_init_done;

10
drivers/s390/cio/device.c
View File

@ -125,10 +125,7 @@ static void io_subchannel_shutdown(struct subchannel *);
static struct css_driver io_subchannel_driver = {
.subchannel_type = SUBCHANNEL_TYPE_IO,
.drv = {
.name = "io_subchannel",
.bus = &css_bus_type,
},
.name = "io_subchannel",
.irq = io_subchannel_irq,
.notify = io_subchannel_notify,
.verify = io_subchannel_verify,
@ -167,7 +164,8 @@ init_ccw_bus_type (void)
if ((ret = bus_register (&ccw_bus_type)))
goto out_err;
if ((ret = driver_register(&io_subchannel_driver.drv)))
ret = css_driver_register(&io_subchannel_driver);
if (ret)
goto out_err;
wait_event(ccw_device_init_wq,
@ -187,7 +185,7 @@ out_err:
static void __exit
cleanup_ccw_bus_type (void)
{
driver_unregister(&io_subchannel_driver.drv);
css_driver_unregister(&io_subchannel_driver);
bus_unregister(&ccw_bus_type);
destroy_workqueue(ccw_device_notify_work);
destroy_workqueue(ccw_device_work);