[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>
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@ -837,6 +837,33 @@ struct bus_type css_bus_type = {
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.shutdown = css_shutdown,
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};
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/**
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* css_driver_register - register a css driver
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* @cdrv: css driver to register
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*
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* This is mainly a wrapper around driver_register that sets name
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* and bus_type in the embedded struct device_driver correctly.
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*/
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int css_driver_register(struct css_driver *cdrv)
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{
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cdrv->drv.name = cdrv->name;
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cdrv->drv.bus = &css_bus_type;
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return driver_register(&cdrv->drv);
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}
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EXPORT_SYMBOL_GPL(css_driver_register);
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/**
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* css_driver_unregister - unregister a css driver
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* @cdrv: css driver to unregister
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*
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* This is a wrapper around driver_unregister.
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*/
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void css_driver_unregister(struct css_driver *cdrv)
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{
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driver_unregister(&cdrv->drv);
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}
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EXPORT_SYMBOL_GPL(css_driver_unregister);
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subsys_initcall(init_channel_subsystem);
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MODULE_LICENSE("GPL");
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@ -132,6 +132,7 @@ struct css_driver {
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int (*probe)(struct subchannel *);
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int (*remove)(struct subchannel *);
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void (*shutdown)(struct subchannel *);
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const char *name;
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};
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#define to_cssdriver(n) container_of(n, struct css_driver, drv)
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@ -141,6 +142,9 @@ struct css_driver {
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*/
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extern struct bus_type css_bus_type;
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extern int css_driver_register(struct css_driver *);
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extern void css_driver_unregister(struct css_driver *);
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extern void css_sch_device_unregister(struct subchannel *);
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extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);
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extern int css_init_done;
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@ -125,10 +125,7 @@ static void io_subchannel_shutdown(struct subchannel *);
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static struct css_driver io_subchannel_driver = {
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.subchannel_type = SUBCHANNEL_TYPE_IO,
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.drv = {
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.name = "io_subchannel",
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.bus = &css_bus_type,
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},
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.irq = io_subchannel_irq,
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.notify = io_subchannel_notify,
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.verify = io_subchannel_verify,
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@ -167,7 +164,8 @@ init_ccw_bus_type (void)
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if ((ret = bus_register (&ccw_bus_type)))
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goto out_err;
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if ((ret = driver_register(&io_subchannel_driver.drv)))
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ret = css_driver_register(&io_subchannel_driver);
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if (ret)
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goto out_err;
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wait_event(ccw_device_init_wq,
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@ -187,7 +185,7 @@ out_err:
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static void __exit
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cleanup_ccw_bus_type (void)
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{
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driver_unregister(&io_subchannel_driver.drv);
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css_driver_unregister(&io_subchannel_driver);
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bus_unregister(&ccw_bus_type);
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destroy_workqueue(ccw_device_notify_work);
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destroy_workqueue(ccw_device_work);
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