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Commit 25b7bb58 authored by Cornelia Huck's avatar Cornelia Huck Committed by Martin Schwidefsky
Browse files

[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: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 98c13c28

drivers/s390/cio/css.c

+27 −0
Original line number Original line Diff line number Diff line
@@ -837,6 +837,33 @@ struct bus_type css_bus_type = { 
	.shutdown = css_shutdown,

	.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);

subsys_initcall(init_channel_subsystem);





MODULE_LICENSE("GPL");

MODULE_LICENSE("GPL");

drivers/s390/cio/css.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -132,6 +132,7 @@ struct css_driver { 
	int (*probe)(struct subchannel *);

	int (*probe)(struct subchannel *);

	int (*remove)(struct subchannel *);

	int (*remove)(struct subchannel *);

	void (*shutdown)(struct subchannel *);

	void (*shutdown)(struct subchannel *);

	const char *name;

};

};





#define to_cssdriver(n) container_of(n, struct css_driver, drv)

#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 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 void css_sch_device_unregister(struct subchannel *);

extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);

extern struct subchannel * get_subchannel_by_schid(struct subchannel_id);

extern int css_init_done;

extern int css_init_done;

drivers/s390/cio/device.c

+4 −6
Original line number Original line Diff line number Diff line
@@ -125,10 +125,7 @@ static void io_subchannel_shutdown(struct subchannel *); 




static struct css_driver io_subchannel_driver = {

static struct css_driver io_subchannel_driver = {

	.subchannel_type = SUBCHANNEL_TYPE_IO,

	.subchannel_type = SUBCHANNEL_TYPE_IO,

	.drv = {

	.name = "io_subchannel",

	.name = "io_subchannel",

		.bus  = &css_bus_type,

	},

	.irq = io_subchannel_irq,

	.irq = io_subchannel_irq,

	.notify = io_subchannel_notify,

	.notify = io_subchannel_notify,

	.verify = io_subchannel_verify,

	.verify = io_subchannel_verify,
@@ -167,7 +164,8 @@ init_ccw_bus_type (void) 
	if ((ret = bus_register (&ccw_bus_type)))

	if ((ret = bus_register (&ccw_bus_type)))

		goto out_err;

		goto out_err;





	if ((ret = driver_register(&io_subchannel_driver.drv)))

	ret = css_driver_register(&io_subchannel_driver);

	if (ret)

		goto out_err;

		goto out_err;





	wait_event(ccw_device_init_wq,

	wait_event(ccw_device_init_wq,
@@ -187,7 +185,7 @@ init_ccw_bus_type (void) 
static void __exit

static void __exit

cleanup_ccw_bus_type (void)

cleanup_ccw_bus_type (void)

{

{

	driver_unregister(&io_subchannel_driver.drv);

	css_driver_unregister(&io_subchannel_driver);

	bus_unregister(&ccw_bus_type);

	bus_unregister(&ccw_bus_type);

	destroy_workqueue(ccw_device_notify_work);

	destroy_workqueue(ccw_device_notify_work);

	destroy_workqueue(ccw_device_work);

	destroy_workqueue(ccw_device_work);