Release 4.12 include/linux/pnp.h

/*
 * Linux Plug and Play Support
 * Copyright by Adam Belay <ambx1@neo.rr.com>
 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
 *      Bjorn Helgaas <bjorn.helgaas@hp.com>
 */

#ifndef _LINUX_PNP_H

#define _LINUX_PNP_H

#include <linux/device.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/mod_devicetable.h>
#include <linux/console.h>


#define PNP_NAME_LEN		50

struct pnp_protocol;
struct pnp_dev;

/*
 * Resource Management
 */
#ifdef CONFIG_PNP
struct resource *pnp_get_resource(struct pnp_dev *dev, unsigned long type,
				unsigned int num);
#else


static inline struct resource *pnp_get_resource(struct pnp_dev *dev,
			unsigned long type, unsigned int num)
{
	return NULL;
}
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#endif



static inline int pnp_resource_valid(struct resource *res)
{
	if (res)
		return 1;
	return 0;
}

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static inline int pnp_resource_enabled(struct resource *res)
{
	if (res && !(res->flags & IORESOURCE_DISABLED))
		return 1;
	return 0;
}

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static inline resource_size_t pnp_resource_len(struct resource *res)
{
	if (res->start == 0 && res->end == 0)
		return 0;
	return resource_size(res);
}


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static inline resource_size_t pnp_port_start(struct pnp_dev *dev,
					     unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return 0;
}

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static inline resource_size_t pnp_port_end(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->end;
	return 0;
}

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static inline unsigned long pnp_port_flags(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_IO | IORESOURCE_AUTO;
}

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static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IO, bar));
}

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static inline resource_size_t pnp_port_len(struct pnp_dev *dev,
					   unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar);

	if (pnp_resource_valid(res))
		return pnp_resource_len(res);
	return 0;
}


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static inline resource_size_t pnp_mem_start(struct pnp_dev *dev,
					    unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return 0;
}

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static inline resource_size_t pnp_mem_end(struct pnp_dev *dev,
					  unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->end;
	return 0;
}

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static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_MEM | IORESOURCE_AUTO;
}

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static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_MEM, bar));
}

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static inline resource_size_t pnp_mem_len(struct pnp_dev *dev,
					  unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar);

	if (pnp_resource_valid(res))
		return pnp_resource_len(res);
	return 0;
}


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static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return -1;
}

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static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_IRQ | IORESOURCE_AUTO;
}

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static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IRQ, bar));
}


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static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);

	if (pnp_resource_valid(res))
		return res->start;
	return -1;
}

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static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar)
{
	struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar);

	if (pnp_resource_valid(res))
		return res->flags;
	return IORESOURCE_DMA | IORESOURCE_AUTO;
}

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static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar)
{
	return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_DMA, bar));
}


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/*
 * Device Management
 */


struct pnp_card {
	
struct device dev;		/* Driver Model device interface */
	
unsigned char number;		/* used as an index, must be unique */
	
struct list_head global_list;	/* node in global list of cards */
	
struct list_head protocol_list;	/* node in protocol's list of cards */
	
struct list_head devices;	/* devices attached to the card */

	
struct pnp_protocol *protocol;
	
struct pnp_id *id;		/* contains supported EISA IDs */

	
char name[PNP_NAME_LEN];	/* contains a human-readable name */
	
unsigned char pnpver;		/* Plug & Play version */
	
unsigned char productver;	/* product version */
	
unsigned int serial;		/* serial number */
	
unsigned char checksum;		/* if zero - checksum passed */
	
struct proc_dir_entry *procdir;	/* directory entry in /proc/bus/isapnp */
};


#define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)

#define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)

#define to_pnp_card(n) container_of(n, struct pnp_card, dev)

#define pnp_for_each_card(card) \
	for((card) = global_to_pnp_card(pnp_cards.next); \
        (card) != global_to_pnp_card(&pnp_cards); \
        (card) = global_to_pnp_card((card)->global_list.next))


struct pnp_card_link {
	
struct pnp_card *card;
	
struct pnp_card_driver *driver;
	
void *driver_data;
	
pm_message_t pm_state;
};



static inline void *pnp_get_card_drvdata(struct pnp_card_link *pcard)
{
	return pcard->driver_data;
}

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static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data)
{
	pcard->driver_data = data;
}

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struct pnp_dev {
	
struct device dev;		/* Driver Model device interface */
	
u64 dma_mask;
	
unsigned int number;		/* used as an index, must be unique */
	
int status;

	
struct list_head global_list;	/* node in global list of devices */
	
struct list_head protocol_list;	/* node in list of device's protocol */
	
struct list_head card_list;	/* node in card's list of devices */
	
struct list_head rdev_list;	/* node in cards list of requested devices */

	
struct pnp_protocol *protocol;
	
struct pnp_card *card;	/* card the device is attached to, none if NULL */
	
struct pnp_driver *driver;
	
struct pnp_card_link *card_link;

	
struct pnp_id *id;		/* supported EISA IDs */

	
int active;
	
int capabilities;
	
unsigned int num_dependent_sets;
	
struct list_head resources;
	
struct list_head options;

	
char name[PNP_NAME_LEN];	/* contains a human-readable name */
	
int flags;			/* used by protocols */
	
struct proc_dir_entry *procent;	/* device entry in /proc/bus/isapnp */
	
void *data;
};


#define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)

#define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)

#define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)

#define	to_pnp_dev(n) container_of(n, struct pnp_dev, dev)

#define pnp_for_each_dev(dev) \
	for((dev) = global_to_pnp_dev(pnp_global.next); \
        (dev) != global_to_pnp_dev(&pnp_global); \
        (dev) = global_to_pnp_dev((dev)->global_list.next))

#define card_for_each_dev(card,dev) \
	for((dev) = card_to_pnp_dev((card)->devices.next); \
        (dev) != card_to_pnp_dev(&(card)->devices); \
        (dev) = card_to_pnp_dev((dev)->card_list.next))

#define pnp_dev_name(dev) (dev)->name



static inline void *pnp_get_drvdata(struct pnp_dev *pdev)
{
	return dev_get_drvdata(&pdev->dev);
}

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static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data)
{
	dev_set_drvdata(&pdev->dev, data);
}

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struct pnp_fixup {
	
char id[7];
	
void (*quirk_function) (struct pnp_dev * dev);	/* fixup function */
};

/* config parameters */

#define PNP_CONFIG_NORMAL	0x0001

#define PNP_CONFIG_FORCE	0x0002	
/* disables validity checking */

/* capabilities */

#define PNP_READ		0x0001

#define PNP_WRITE		0x0002

#define PNP_DISABLE		0x0004

#define PNP_CONFIGURABLE	0x0008

#define PNP_REMOVABLE		0x0010

#define PNP_CONSOLE		0x0020


#define pnp_can_read(dev)	(((dev)->protocol->get) && \
                                 ((dev)->capabilities & PNP_READ))

#define pnp_can_write(dev)	(((dev)->protocol->set) && \
                                 ((dev)->capabilities & PNP_WRITE))

#define pnp_can_disable(dev)	(((dev)->protocol->disable) &&            \
                                 ((dev)->capabilities & PNP_DISABLE) &&   \
                                 (!((dev)->capabilities & PNP_CONSOLE) || \
                                  console_suspend_enabled))

#define pnp_can_configure(dev)	((!(dev)->active) && \
                                 ((dev)->capabilities & PNP_CONFIGURABLE))

#define pnp_can_suspend(dev)	(((dev)->protocol->suspend) &&            \
                                 (!((dev)->capabilities & PNP_CONSOLE) || \
                                  console_suspend_enabled))


#ifdef CONFIG_ISAPNP
extern struct pnp_protocol isapnp_protocol;

#define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
#else

#define pnp_device_is_isapnp(dev) 0
#endif
extern struct mutex pnp_res_mutex;

#ifdef CONFIG_PNPBIOS
extern struct pnp_protocol pnpbios_protocol;
extern bool arch_pnpbios_disabled(void);

#define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
#else

#define pnp_device_is_pnpbios(dev) 0

#define arch_pnpbios_disabled()	false
#endif

#ifdef CONFIG_PNPACPI
extern struct pnp_protocol pnpacpi_protocol;



static inline struct acpi_device *pnp_acpi_device(struct pnp_dev *dev)
{
	if (dev->protocol == &pnpacpi_protocol)
		return dev->data;
	return NULL;
}
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#else

#define pnp_acpi_device(dev) 0
#endif

/* status */

#define PNP_READY		0x0000

#define PNP_ATTACHED		0x0001

#define PNP_BUSY		0x0002

#define PNP_FAULTY		0x0004

/* isapnp specific macros */


#define isapnp_card_number(dev)	((dev)->card ? (dev)->card->number : -1)

#define isapnp_csn_number(dev)  ((dev)->number)

/*
 * Driver Management
 */


struct pnp_id {
	
char id[PNP_ID_LEN];
	
struct pnp_id *next;
};


struct pnp_driver {
	
char *name;
	
const struct pnp_device_id *id_table;
	
unsigned int flags;
	
int (*probe) (struct pnp_dev *dev, const struct pnp_device_id *dev_id);
	
void (*remove) (struct pnp_dev *dev);
	
void (*shutdown) (struct pnp_dev *dev);
	
int (*suspend) (struct pnp_dev *dev, pm_message_t state);
	
int (*resume) (struct pnp_dev *dev);
	
struct device_driver driver;
};


#define	to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)


struct pnp_card_driver {
	
struct list_head global_list;
	
char *name;
	
const struct pnp_card_device_id *id_table;
	
unsigned int flags;
	
int (*probe) (struct pnp_card_link *card,
		      const struct pnp_card_device_id *card_id);
	
void (*remove) (struct pnp_card_link *card);
	
int (*suspend) (struct pnp_card_link *card, pm_message_t state);
	
int (*resume) (struct pnp_card_link *card);
	
struct pnp_driver link;
};


#define	to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)

/* pnp driver flags */

#define PNP_DRIVER_RES_DO_NOT_CHANGE	0x0001	
/* do not change the state of the device */

#define PNP_DRIVER_RES_DISABLE		0x0003	
/* ensure the device is disabled */

/*
 * Protocol Management
 */


struct pnp_protocol {
	
struct list_head protocol_list;
	
char *name;

	/* resource control functions */
	
int (*get) (struct pnp_dev *dev);
	
int (*set) (struct pnp_dev *dev);
	
int (*disable) (struct pnp_dev *dev);

	/* protocol specific suspend/resume */
	
bool (*can_wakeup) (struct pnp_dev *dev);
	
int (*suspend) (struct pnp_dev * dev, pm_message_t state);
	
int (*resume) (struct pnp_dev * dev);

	/* used by pnp layer only (look but don't touch) */
	
unsigned char number;	/* protocol number */
	
struct device dev;	/* link to driver model */
	
struct list_head cards;
	
struct list_head devices;
};


#define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)

#define protocol_for_each_card(protocol,card) \
	for((card) = protocol_to_pnp_card((protocol)->cards.next); \
        (card) != protocol_to_pnp_card(&(protocol)->cards); \
        (card) = protocol_to_pnp_card((card)->protocol_list.next))

#define protocol_for_each_dev(protocol,dev) \
	for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
        (dev) != protocol_to_pnp_dev(&(protocol)->devices); \
        (dev) = protocol_to_pnp_dev((dev)->protocol_list.next))

extern struct bus_type pnp_bus_type;

#if defined(CONFIG_PNP)

/* device management */
int pnp_device_attach(struct pnp_dev *pnp_dev);
void pnp_device_detach(struct pnp_dev *pnp_dev);
extern struct list_head pnp_global;
extern int pnp_platform_devices;

/* multidevice card support */
struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
					const char *id, struct pnp_dev *from);
void pnp_release_card_device(struct pnp_dev *dev);
int pnp_register_card_driver(struct pnp_card_driver *drv);
void pnp_unregister_card_driver(struct pnp_card_driver *drv);
extern struct list_head pnp_cards;

/* resource management */
int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t base,
			resource_size_t size);
int pnp_auto_config_dev(struct pnp_dev *dev);
int pnp_start_dev(struct pnp_dev *dev);
int pnp_stop_dev(struct pnp_dev *dev);
int pnp_activate_dev(struct pnp_dev *dev);
int pnp_disable_dev(struct pnp_dev *dev);
int pnp_range_reserved(resource_size_t start, resource_size_t end);

/* protocol helpers */
int pnp_is_active(struct pnp_dev *dev);
int compare_pnp_id(struct pnp_id *pos, const char *id);
int pnp_register_driver(struct pnp_driver *drv);
void pnp_unregister_driver(struct pnp_driver *drv);

#else

/* device management */


static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
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static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { }

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#define pnp_platform_devices 0

/* multidevice card support */


static inline struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, const char *id, struct pnp_dev *from) { return NULL; }
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static inline void pnp_release_card_device(struct pnp_dev *dev) { }
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static inline int pnp_register_card_driver(struct pnp_card_driver *drv) { return -ENODEV; }
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Jaroslav Kysela
1
6.25%
1
33.33%
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16
100.00%
3
100.00%



static inline void pnp_unregister_card_driver(struct pnp_card_driver *drv) { }

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Jaroslav Kysela
6
54.55%
1
33.33%
Adam Belay
4
36.36%
1
33.33%
Björn Helgaas
1
9.09%
1
33.33%
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11
100.00%
3
100.00%

/* resource management */


static inline int pnp_possible_config(struct pnp_dev *dev, int type,
				      resource_size_t base,
				      resource_size_t size) { return 0; }
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24
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1
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static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
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Adam Belay
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16
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3
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static inline int pnp_start_dev(struct pnp_dev *dev) { return -ENODEV; }
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Pierre Ossman
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16
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static inline int pnp_stop_dev(struct pnp_dev *dev) { return -ENODEV; }
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Pierre Ossman
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16
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static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
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Adam Belay
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16
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static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
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static inline int pnp_range_reserved(resource_size_t start, resource_size_t end) { return 0;}

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16
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/* protocol helpers */


static inline int pnp_is_active(struct pnp_dev *dev) { return 0; }
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Jaroslav Kysela
11
73.33%
1
25.00%
Adam Belay
3
20.00%
2
50.00%
Andrew Morton
1
6.67%
1
25.00%
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15
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4
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static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -ENODEV; }
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static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
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static inline void pnp_unregister_driver(struct pnp_driver *drv) { }

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#endif /* CONFIG_PNP */

/**
 * module_pnp_driver() - Helper macro for registering a PnP driver
 * @__pnp_driver: pnp_driver struct
 *
 * Helper macro for PnP drivers which do not do anything special in module
 * init/exit. This eliminates a lot of boilerplate. Each module may only
 * use this macro once, and calling it replaces module_init() and module_exit()
 */

#define module_pnp_driver(__pnp_driver) \
	module_driver(__pnp_driver, pnp_register_driver, \
                                    pnp_unregister_driver)

#endif /* _LINUX_PNP_H */
Overall Contributors
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Adam Belay
1133
48.69%
12
24.00%
Björn Helgaas
835
35.88%
14
28.00%
Jaroslav Kysela
145
6.23%
5
10.00%
Pierre Ossman
48
2.06%
1
2.00%
Takashi Iwai
33
1.42%
1
2.00%
David S. Miller
31
1.33%
1
2.00%
Peter Hurley
15
0.64%
1
2.00%
Alan Stern
12
0.52%
1
2.00%
Luis R. Rodriguez
12
0.52%
1
2.00%
David Härdeman
12
0.52%
1
2.00%
David Shaohua Li
11
0.47%
1
2.00%
Peter Hüwe
9
0.39%
1
2.00%
David Brownell
8
0.34%
2
4.00%
Daniel Walker
5
0.21%
1
2.00%
René Herman
5
0.21%
1
2.00%
Len Brown
4
0.17%
1
2.00%
Joe Perches
4
0.17%
2
4.00%
Al Viro
3
0.13%
1
2.00%
Andrew Morton
2
0.09%
2
4.00%
Total
2327
100.00%
50
100.00%
Directory: include/linux

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