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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [pnp/] [card.c] - Blame information for rev 65

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/*
 * card.c - contains functions for managing groups of PnP devices
 *
 * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
 */
 
#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;
 
        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;
 
        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)
{
        int rc = device_create_file(&card->dev, &dev_attr_name);
 
        if (rc)
                return rc;
 
        rc = device_create_file(&card->dev, &dev_attr_card_id);
        if (rc)
                goto err_name;
 
        return 0;
 
err_name:
        device_remove_file(&card->dev, &dev_attr_name);
        return rc;
}
 
/**
 * 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;
 
        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) {
                dev_err(&card->dev, "could not register (err=%d)\n", error);
                return error;
        }
 
        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 an unreasonable 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);
        }
        return 0;
}
 
/**
 * 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;
 
        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)
{
        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)
                return NULL;
 
        card = clink->card;
        drv = clink->driver;
        if (!from) {
                pos = card->devices.next;
        } else {
                if (from->card != card)
                        return NULL;
                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;
        }
 
        return NULL;
 
found:
        dev->card_link = clink;
        dev->dev.driver = &drv->link.driver;
        if (pnp_bus_type.probe(&dev->dev))
                goto err_out;
        if (device_bind_driver(&dev->dev))
                goto err_out;
 
        return dev;
 
err_out:
        dev->dev.driver = NULL;
        dev->card_link = NULL;
        return NULL;
}
 
/**
 * 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;
 
        drv->link.remove = &card_remove;
        device_release_driver(&dev->dev);
        drv->link.remove = &card_remove_first;
}
 
/*
 * 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);
}
 
EXPORT_SYMBOL(pnp_request_card_device);
EXPORT_SYMBOL(pnp_release_card_device);
EXPORT_SYMBOL(pnp_register_card_driver);
EXPORT_SYMBOL(pnp_unregister_card_driver);

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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [pnp/] [card.c] - Blame information for rev 65

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