[mirror_ubuntu-artful-kernel.git] / drivers / pnp / card.c

/*
 * card.c - contains functions for managing groups of PnP devices
 *
 * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
 *
 */

#include <linux/config.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/pnp.h>
#include "base.h"

LIST_HEAD(pnp_cards);
static LIST_HEAD(pnp_card_drivers);


static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv, struct pnp_card * card)
{
	const struct pnp_card_device_id * drv_id = drv->id_table;
	while (*drv_id->id){
		if (compare_pnp_id(card->id,drv_id->id)) {
			int i = 0;
			for (;;) {
				int found;
				struct pnp_dev *dev;
				if (i == PNP_MAX_DEVICES || ! *drv_id->devs[i].id)
					return drv_id;
				found = 0;
				card_for_each_dev(card, dev) {
					if (compare_pnp_id(dev->id, drv_id->devs[i].id)) {
						found = 1;
						break;
					}
				}
				if (! found)
					break;
				i++;
			}
		}
		drv_id++;
	}
	return NULL;
}

static void card_remove(struct pnp_dev * dev)
{
	dev->card_link = NULL;
}

static void card_remove_first(struct pnp_dev * dev)
{
	struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
	if (!dev->card || !drv)
		return;
	if (drv->remove)
		drv->remove(dev->card_link);
	drv->link.remove = &card_remove;
	kfree(dev->card_link);
	card_remove(dev);
}

static int card_probe(struct pnp_card *card, struct pnp_card_driver *drv)
{
	const struct pnp_card_device_id *id;
	struct pnp_card_link *clink;
	struct pnp_dev *dev;

	if (!drv->probe)
		return 0;
	id = match_card(drv,card);
	if (!id)
		return 0;

	clink = pnp_alloc(sizeof(*clink));
	if (!clink)
		return 0;
	clink->card = card;
	clink->driver = drv;
	clink->pm_state = PMSG_ON;

	if (drv->probe(clink, id) >= 0)
		return 1;

	/* Recovery */
	card_for_each_dev(card, dev) {
		if (dev->card_link == clink)
			pnp_release_card_device(dev);
	}
	kfree(clink);
	return 0;
}

/**
 * pnp_add_card_id - adds an EISA id to the specified card
 * @id: pointer to a pnp_id structure
 * @card: pointer to the desired card
 *
 */

int pnp_add_card_id(struct pnp_id *id, struct pnp_card * card)
{
	struct pnp_id * ptr;
	if (!id)
		return -EINVAL;
	if (!card)
		return -EINVAL;
	id->next = NULL;
	ptr = card->id;
	while (ptr && ptr->next)
		ptr = ptr->next;
	if (ptr)
		ptr->next = id;
	else
		card->id = id;
	return 0;
}

static void pnp_free_card_ids(struct pnp_card * card)
{
	struct pnp_id * id;
	struct pnp_id *next;
	if (!card)
		return;
	id = card->id;
	while (id) {
		next = id->next;
		kfree(id);
		id = next;
	}
}

static void pnp_release_card(struct device *dmdev)
{
	struct pnp_card * card = to_pnp_card(dmdev);
	pnp_free_card_ids(card);
	kfree(card);
}


static ssize_t pnp_show_card_name(struct device *dmdev, struct device_attribute *attr, char *buf)
{
	char *str = buf;
	struct pnp_card *card = to_pnp_card(dmdev);
	str += sprintf(str,"%s\n", card->name);
	return (str - buf);
}

static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL);

static ssize_t pnp_show_card_ids(struct device *dmdev, struct device_attribute *attr, char *buf)
{
	char *str = buf;
	struct pnp_card *card = to_pnp_card(dmdev);
	struct pnp_id * pos = card->id;

	while (pos) {
		str += sprintf(str,"%s\n", pos->id);
		pos = pos->next;
	}
	return (str - buf);
}

static DEVICE_ATTR(card_id,S_IRUGO,pnp_show_card_ids,NULL);

static int pnp_interface_attach_card(struct pnp_card *card)
{
	device_create_file(&card->dev,&dev_attr_name);
	device_create_file(&card->dev,&dev_attr_card_id);
	return 0;
}

/**
 * pnp_add_card - adds a PnP card to the PnP Layer
 * @card: pointer to the card to add
 */

int pnp_add_card(struct pnp_card * card)
{
	int error;
	struct list_head * pos, * temp;
	if (!card || !card->protocol)
		return -EINVAL;

	sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, card->number);
	card->dev.parent = &card->protocol->dev;
	card->dev.bus = NULL;
	card->dev.release = &pnp_release_card;
	error = device_register(&card->dev);

	if (error == 0) {
		pnp_interface_attach_card(card);
		spin_lock(&pnp_lock);
		list_add_tail(&card->global_list, &pnp_cards);
		list_add_tail(&card->protocol_list, &card->protocol->cards);
		spin_unlock(&pnp_lock);

		/* we wait until now to add devices in order to ensure the drivers
		 * will be able to use all of the related devices on the card
		 * without waiting any unresonable length of time */
		list_for_each(pos,&card->devices){
			struct pnp_dev *dev = card_to_pnp_dev(pos);
			__pnp_add_device(dev);
		}

		/* match with card drivers */
		list_for_each_safe(pos,temp,&pnp_card_drivers){
			struct pnp_card_driver * drv = list_entry(pos, struct pnp_card_driver, global_list);
			card_probe(card,drv);
		}
	} else
		pnp_err("sysfs failure, card '%s' will be unavailable", card->dev.bus_id);
	return error;
}

/**
 * pnp_remove_card - removes a PnP card from the PnP Layer
 * @card: pointer to the card to remove
 */

void pnp_remove_card(struct pnp_card * card)
{
	struct list_head *pos, *temp;
	if (!card)
		return;
	device_unregister(&card->dev);
	spin_lock(&pnp_lock);
	list_del(&card->global_list);
	list_del(&card->protocol_list);
	spin_unlock(&pnp_lock);
	list_for_each_safe(pos,temp,&card->devices){
		struct pnp_dev *dev = card_to_pnp_dev(pos);
		pnp_remove_card_device(dev);
	}
}

/**
 * pnp_add_card_device - adds a device to the specified card
 * @card: pointer to the card to add to
 * @dev: pointer to the device to add
 */

int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
{
	if (!card || !dev || !dev->protocol)
		return -EINVAL;
	dev->dev.parent = &card->dev;
	dev->card_link = NULL;
	snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", dev->protocol->number,
		 card->number,dev->number);
	spin_lock(&pnp_lock);
	dev->card = card;
	list_add_tail(&dev->card_list, &card->devices);
	spin_unlock(&pnp_lock);
	return 0;
}

/**
 * pnp_remove_card_device- removes a device from the specified card
 * @dev: pointer to the device to remove
 */

void pnp_remove_card_device(struct pnp_dev * dev)
{
	spin_lock(&pnp_lock);
	dev->card = NULL;
	list_del(&dev->card_list);
	spin_unlock(&pnp_lock);
	__pnp_remove_device(dev);
}

/**
 * pnp_request_card_device - Searches for a PnP device under the specified card
 * @clink: pointer to the card link, cannot be NULL
 * @id: pointer to a PnP ID structure that explains the rules for finding the device
 * @from: Starting place to search from. If NULL it will start from the begining.
 */

struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from)
{
	struct list_head * pos;
	struct pnp_dev * dev;
	struct pnp_card_driver * drv;
	struct pnp_card * card;
	if (!clink || !id)
		goto done;
	card = clink->card;
	drv = clink->driver;
	if (!from) {
		pos = card->devices.next;
	} else {
		if (from->card != card)
			goto done;
		pos = from->card_list.next;
	}
	while (pos != &card->devices) {
		dev = card_to_pnp_dev(pos);
		if ((!dev->card_link) && compare_pnp_id(dev->id,id))
			goto found;
		pos = pos->next;
	}

done:
	return NULL;

found:
	down_write(&dev->dev.bus->subsys.rwsem);
	dev->card_link = clink;
	dev->dev.driver = &drv->link.driver;
	if (pnp_bus_type.probe(&dev->dev)) {
		dev->dev.driver = NULL;
		dev->card_link = NULL;
		up_write(&dev->dev.bus->subsys.rwsem);
		return NULL;
	}
	device_bind_driver(&dev->dev);
	up_write(&dev->dev.bus->subsys.rwsem);

	return dev;
}

/**
 * pnp_release_card_device - call this when the driver no longer needs the device
 * @dev: pointer to the PnP device stucture
 */

void pnp_release_card_device(struct pnp_dev * dev)
{
	struct pnp_card_driver * drv = dev->card_link->driver;
	if (!drv)
		return;
	down_write(&dev->dev.bus->subsys.rwsem);
	drv->link.remove = &card_remove;
	device_release_driver(&dev->dev);
	drv->link.remove = &card_remove_first;
	up_write(&dev->dev.bus->subsys.rwsem);
}

/*
 * suspend/resume callbacks
 */
static int card_suspend(struct pnp_dev *dev, pm_message_t state)
{
	struct pnp_card_link *link = dev->card_link;
	if (link->pm_state.event == state.event)
		return 0;
	link->pm_state = state;
	return link->driver->suspend(link, state);
}

static int card_resume(struct pnp_dev *dev)
{
	struct pnp_card_link *link = dev->card_link;
	if (link->pm_state.event == PM_EVENT_ON)
		return 0;
	link->pm_state = PMSG_ON;
	link->driver->resume(link);
	return 0;
}

/**
 * pnp_register_card_driver - registers a PnP card driver with the PnP Layer
 * @drv: pointer to the driver to register
 */

int pnp_register_card_driver(struct pnp_card_driver * drv)
{
	int error;
	struct list_head *pos, *temp;

	drv->link.name = drv->name;
	drv->link.id_table = NULL;	/* this will disable auto matching */
	drv->link.flags = drv->flags;
	drv->link.probe = NULL;
	drv->link.remove = &card_remove_first;
	drv->link.suspend = drv->suspend ? card_suspend : NULL;
	drv->link.resume = drv->resume ? card_resume : NULL;

	error = pnp_register_driver(&drv->link);
	if (error < 0)
		return error;

	spin_lock(&pnp_lock);
	list_add_tail(&drv->global_list, &pnp_card_drivers);
	spin_unlock(&pnp_lock);

	list_for_each_safe(pos,temp,&pnp_cards){
		struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
		card_probe(card,drv);
	}
	return 0;
}

/**
 * pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer
 * @drv: pointer to the driver to unregister
 */

void pnp_unregister_card_driver(struct pnp_card_driver * drv)
{
	spin_lock(&pnp_lock);
	list_del(&drv->global_list);
	spin_unlock(&pnp_lock);
	pnp_unregister_driver(&drv->link);
}

#if 0
EXPORT_SYMBOL(pnp_add_card);
EXPORT_SYMBOL(pnp_remove_card);
EXPORT_SYMBOL(pnp_add_card_device);
EXPORT_SYMBOL(pnp_remove_card_device);
EXPORT_SYMBOL(pnp_add_card_id);
#endif  /*  0  */
EXPORT_SYMBOL(pnp_request_card_device);
EXPORT_SYMBOL(pnp_release_card_device);
EXPORT_SYMBOL(pnp_register_card_driver);
EXPORT_SYMBOL(pnp_unregister_card_driver);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* card.c - contains functions for managing groups of PnP devices
	3	*
	4	* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
	5	*
	6	*/
	7
	8	#include <linux/config.h>
	9	#include <linux/module.h>
	10	#include <linux/slab.h>
1da177e4 LT	11	#include <linux/pnp.h>
	12	#include "base.h"
	13
	14	LIST_HEAD(pnp_cards);
b449f63c	15	static LIST_HEAD(pnp_card_drivers);
1da177e4 LT	16
	17
	18	static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv, struct pnp_card * card)
	19	{
	20	const struct pnp_card_device_id * drv_id = drv->id_table;
	21	while (*drv_id->id){
	22	if (compare_pnp_id(card->id,drv_id->id)) {
	23	int i = 0;
	24	for (;;) {
	25	int found;
	26	struct pnp_dev *dev;
	27	if (i == PNP_MAX_DEVICES \|\| ! *drv_id->devs[i].id)
	28	return drv_id;
	29	found = 0;
	30	card_for_each_dev(card, dev) {
	31	if (compare_pnp_id(dev->id, drv_id->devs[i].id)) {
	32	found = 1;
	33	break;
	34	}
	35	}
	36	if (! found)
	37	break;
	38	i++;
	39	}
	40	}
	41	drv_id++;
	42	}
	43	return NULL;
	44	}
	45
	46	static void card_remove(struct pnp_dev * dev)
	47	{
	48	dev->card_link = NULL;
	49	}
982c6094	50
1da177e4 LT	51	static void card_remove_first(struct pnp_dev * dev)
	52	{
	53	struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
	54	if (!dev->card \|\| !drv)
	55	return;
	56	if (drv->remove)
	57	drv->remove(dev->card_link);
	58	drv->link.remove = &card_remove;
	59	kfree(dev->card_link);
	60	card_remove(dev);
	61	}
	62
a9adb8db	63	static int card_probe(struct pnp_card card, struct pnp_card_driver drv)
1da177e4	64	{
a9adb8db JJ	65	const struct pnp_card_device_id *id;
	66	struct pnp_card_link *clink;
	67	struct pnp_dev *dev;
	68
	69	if (!drv->probe)
	70	return 0;
	71	id = match_card(drv,card);
	72	if (!id)
	73	return 0;
	74
	75	clink = pnp_alloc(sizeof(*clink));
	76	if (!clink)
	77	return 0;
	78	clink->card = card;
	79	clink->driver = drv;
	80	clink->pm_state = PMSG_ON;
	81
	82	if (drv->probe(clink, id) >= 0)
	83	return 1;
	84
	85	/* Recovery */
	86	card_for_each_dev(card, dev) {
	87	if (dev->card_link == clink)
	88	pnp_release_card_device(dev);
1da177e4	89	}
a9adb8db	90	kfree(clink);
1da177e4 LT	91	return 0;
	92	}
	93
	94	/**
	95	* pnp_add_card_id - adds an EISA id to the specified card
	96	* @id: pointer to a pnp_id structure
	97	* @card: pointer to the desired card
	98	*
	99	*/
	100
	101	int pnp_add_card_id(struct pnp_id id, struct pnp_card card)
	102	{
	103	struct pnp_id * ptr;
	104	if (!id)
	105	return -EINVAL;
	106	if (!card)
	107	return -EINVAL;
	108	id->next = NULL;
	109	ptr = card->id;
	110	while (ptr && ptr->next)
	111	ptr = ptr->next;
	112	if (ptr)
	113	ptr->next = id;
	114	else
	115	card->id = id;
	116	return 0;
	117	}
	118
	119	static void pnp_free_card_ids(struct pnp_card * card)
	120	{
	121	struct pnp_id * id;
	122	struct pnp_id *next;
	123	if (!card)
	124	return;
	125	id = card->id;
	126	while (id) {
	127	next = id->next;
	128	kfree(id);
	129	id = next;
	130	}
	131	}
	132
	133	static void pnp_release_card(struct device *dmdev)
	134	{
	135	struct pnp_card * card = to_pnp_card(dmdev);
	136	pnp_free_card_ids(card);
	137	kfree(card);
	138	}
	139
	140
e404e274	141	static ssize_t pnp_show_card_name(struct device dmdev, struct device_attribute attr, char *buf)
1da177e4 LT	142	{
	143	char *str = buf;
	144	struct pnp_card *card = to_pnp_card(dmdev);
	145	str += sprintf(str,"%s\n", card->name);
	146	return (str - buf);
	147	}
	148
	149	static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL);
	150
e404e274	151	static ssize_t pnp_show_card_ids(struct device dmdev, struct device_attribute attr, char *buf)
1da177e4 LT	152	{
	153	char *str = buf;
	154	struct pnp_card *card = to_pnp_card(dmdev);
	155	struct pnp_id * pos = card->id;
	156
	157	while (pos) {
	158	str += sprintf(str,"%s\n", pos->id);
	159	pos = pos->next;
	160	}
	161	return (str - buf);
	162	}
	163
	164	static DEVICE_ATTR(card_id,S_IRUGO,pnp_show_card_ids,NULL);
	165
	166	static int pnp_interface_attach_card(struct pnp_card *card)
	167	{
	168	device_create_file(&card->dev,&dev_attr_name);
	169	device_create_file(&card->dev,&dev_attr_card_id);
	170	return 0;
	171	}
	172
	173	/**
	174	* pnp_add_card - adds a PnP card to the PnP Layer
	175	* @card: pointer to the card to add
	176	*/
	177
	178	int pnp_add_card(struct pnp_card * card)
	179	{
	180	int error;
	181	struct list_head * pos, * temp;
	182	if (!card \|\| !card->protocol)
	183	return -EINVAL;
	184
	185	sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, card->number);
	186	card->dev.parent = &card->protocol->dev;
	187	card->dev.bus = NULL;
	188	card->dev.release = &pnp_release_card;
	189	error = device_register(&card->dev);
	190
	191	if (error == 0) {
	192	pnp_interface_attach_card(card);
	193	spin_lock(&pnp_lock);
	194	list_add_tail(&card->global_list, &pnp_cards);
	195	list_add_tail(&card->protocol_list, &card->protocol->cards);
	196	spin_unlock(&pnp_lock);
	197
	198	/* we wait until now to add devices in order to ensure the drivers
	199	* will be able to use all of the related devices on the card
	200	* without waiting any unresonable length of time */
	201	list_for_each(pos,&card->devices){
	202	struct pnp_dev *dev = card_to_pnp_dev(pos);
	203	__pnp_add_device(dev);
	204	}
	205
	206	/* match with card drivers */
	207	list_for_each_safe(pos,temp,&pnp_card_drivers){
	208	struct pnp_card_driver * drv = list_entry(pos, struct pnp_card_driver, global_list);
	209	card_probe(card,drv);
	210	}
	211	} else
	212	pnp_err("sysfs failure, card '%s' will be unavailable", card->dev.bus_id);
	213	return error;
	214	}
	215
216	/**
217	* pnp_remove_card - removes a PnP card from the PnP Layer
218	* @card: pointer to the card to remove
219	*/
220
221	void pnp_remove_card(struct pnp_card * card)
222	{
223	struct list_head pos, temp;
224	if (!card)
225	return;
226	device_unregister(&card->dev);
227	spin_lock(&pnp_lock);
228	list_del(&card->global_list);
229	list_del(&card->protocol_list);
230	spin_unlock(&pnp_lock);
231	list_for_each_safe(pos,temp,&card->devices){
232	struct pnp_dev *dev = card_to_pnp_dev(pos);
233	pnp_remove_card_device(dev);
234	}
235	}
236
237	/**
238	* pnp_add_card_device - adds a device to the specified card
239	* @card: pointer to the card to add to
240	* @dev: pointer to the device to add
241	*/
242
243	int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
244	{
245	if (!card \|\| !dev \|\| !dev->protocol)
246	return -EINVAL;
247	dev->dev.parent = &card->dev;
248	dev->card_link = NULL;
249	snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", dev->protocol->number,
250	card->number,dev->number);
251	spin_lock(&pnp_lock);
252	dev->card = card;
253	list_add_tail(&dev->card_list, &card->devices);
254	spin_unlock(&pnp_lock);
255	return 0;
256	}
257
258	/**
259	* pnp_remove_card_device- removes a device from the specified card
1da177e4 LT	260	* @dev: pointer to the device to remove
	261	*/
	262
	263	void pnp_remove_card_device(struct pnp_dev * dev)
	264	{
	265	spin_lock(&pnp_lock);
	266	dev->card = NULL;
	267	list_del(&dev->card_list);
	268	spin_unlock(&pnp_lock);
	269	__pnp_remove_device(dev);
	270	}
	271
	272	/**
	273	* pnp_request_card_device - Searches for a PnP device under the specified card
3d41088f	274	* @clink: pointer to the card link, cannot be NULL
1da177e4 LT	275	* @id: pointer to a PnP ID structure that explains the rules for finding the device
	276	* @from: Starting place to search from. If NULL it will start from the begining.
	277	*/
	278
	279	struct pnp_dev * pnp_request_card_device(struct pnp_card_link clink, const char id, struct pnp_dev * from)
	280	{
	281	struct list_head * pos;
	282	struct pnp_dev * dev;
	283	struct pnp_card_driver * drv;
	284	struct pnp_card * card;
	285	if (!clink \|\| !id)
	286	goto done;
	287	card = clink->card;
	288	drv = clink->driver;
	289	if (!from) {
	290	pos = card->devices.next;
	291	} else {
	292	if (from->card != card)
	293	goto done;
	294	pos = from->card_list.next;
	295	}
	296	while (pos != &card->devices) {
	297	dev = card_to_pnp_dev(pos);
	298	if ((!dev->card_link) && compare_pnp_id(dev->id,id))
	299	goto found;
	300	pos = pos->next;
	301	}
	302
	303	done:
	304	return NULL;
	305
	306	found:
	307	down_write(&dev->dev.bus->subsys.rwsem);
	308	dev->card_link = clink;
	309	dev->dev.driver = &drv->link.driver;
8b613e1c AB	310	if (pnp_bus_type.probe(&dev->dev)) {
	311	dev->dev.driver = NULL;
	312	dev->card_link = NULL;
	313	up_write(&dev->dev.bus->subsys.rwsem);
	314	return NULL;
1da177e4 LT	315	}
	316	device_bind_driver(&dev->dev);
	317	up_write(&dev->dev.bus->subsys.rwsem);
	318
	319	return dev;
	320	}
	321
	322	/**
	323	* pnp_release_card_device - call this when the driver no longer needs the device
	324	* @dev: pointer to the PnP device stucture
	325	*/
	326
	327	void pnp_release_card_device(struct pnp_dev * dev)
	328	{
	329	struct pnp_card_driver * drv = dev->card_link->driver;
	330	if (!drv)
	331	return;
	332	down_write(&dev->dev.bus->subsys.rwsem);
	333	drv->link.remove = &card_remove;
	334	device_release_driver(&dev->dev);
	335	drv->link.remove = &card_remove_first;
	336	up_write(&dev->dev.bus->subsys.rwsem);
	337	}
	338
4c98cfef TI	339	/*
	340	* suspend/resume callbacks
	341	*/
	342	static int card_suspend(struct pnp_dev *dev, pm_message_t state)
	343	{
	344	struct pnp_card_link *link = dev->card_link;
	345	if (link->pm_state.event == state.event)
	346	return 0;
	347	link->pm_state = state;
	348	return link->driver->suspend(link, state);
	349	}
	350
	351	static int card_resume(struct pnp_dev *dev)
	352	{
	353	struct pnp_card_link *link = dev->card_link;
	354	if (link->pm_state.event == PM_EVENT_ON)
	355	return 0;
	356	link->pm_state = PMSG_ON;
	357	link->driver->resume(link);
	358	return 0;
	359	}
	360
1da177e4 LT	361	/**
	362	* pnp_register_card_driver - registers a PnP card driver with the PnP Layer
	363	* @drv: pointer to the driver to register
	364	*/
	365
	366	int pnp_register_card_driver(struct pnp_card_driver * drv)
	367	{
982c6094	368	int error;
1da177e4 LT	369	struct list_head pos, temp;
	370
	371	drv->link.name = drv->name;
	372	drv->link.id_table = NULL; /* this will disable auto matching */
	373	drv->link.flags = drv->flags;
	374	drv->link.probe = NULL;
	375	drv->link.remove = &card_remove_first;
4c98cfef TI	376	drv->link.suspend = drv->suspend ? card_suspend : NULL;
4c98cfef TI	377	drv->link.resume = drv->resume ? card_resume : NULL;
1da177e4	378
982c6094 BH	379	error = pnp_register_driver(&drv->link);
	380	if (error < 0)
	381	return error;
d1d051b2	382
1da177e4 LT	383	spin_lock(&pnp_lock);
	384	list_add_tail(&drv->global_list, &pnp_card_drivers);
	385	spin_unlock(&pnp_lock);
d1d051b2	386
1da177e4 LT	387	list_for_each_safe(pos,temp,&pnp_cards){
1da177e4 LT	388	struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
982c6094	389	card_probe(card,drv);
1da177e4	390	}
982c6094	391	return 0;
1da177e4 LT	392	}
	393
	394	/**
	395	* pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer
	396	* @drv: pointer to the driver to unregister
	397	*/
	398
	399	void pnp_unregister_card_driver(struct pnp_card_driver * drv)
	400	{
	401	spin_lock(&pnp_lock);
	402	list_del(&drv->global_list);
	403	spin_unlock(&pnp_lock);
	404	pnp_unregister_driver(&drv->link);
	405	}
	406
b449f63c	407	#if 0
1da177e4 LT	408	EXPORT_SYMBOL(pnp_add_card);
	409	EXPORT_SYMBOL(pnp_remove_card);
	410	EXPORT_SYMBOL(pnp_add_card_device);
	411	EXPORT_SYMBOL(pnp_remove_card_device);
	412	EXPORT_SYMBOL(pnp_add_card_id);
b449f63c	413	#endif /* 0 */
1da177e4 LT	414	EXPORT_SYMBOL(pnp_request_card_device);
	415	EXPORT_SYMBOL(pnp_release_card_device);
	416	EXPORT_SYMBOL(pnp_register_card_driver);
	417	EXPORT_SYMBOL(pnp_unregister_card_driver);