pcmcia: move high level CIS access code to separate file (5c128e84) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/pcmcia/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -6,7 +6,7 @@ pcmcia_core-y += cs.o rsrc_mgr.o socket_sysfs.o
		pcmcia_core-$(CONFIG_CARDBUS) += cardbus.o
		obj-$(CONFIG_PCCARD) += pcmcia_core.o

		pcmcia-y += ds.o pcmcia_resource.o cistpl.o
		pcmcia-y += ds.o pcmcia_resource.o cistpl.o pcmcia_cis.o
		pcmcia-$(CONFIG_PCMCIA_IOCTL) += pcmcia_ioctl.o
		obj-$(CONFIG_PCMCIA) += pcmcia.o

drivers/pcmcia/cistpl.c

+0 −100

Original line number	Diff line number	Diff line
		@@ -1361,106 +1361,6 @@ int pcmcia_parse_tuple(tuple_t tuple, cisparse_t parse)
		EXPORT_SYMBOL(pcmcia_parse_tuple);


		/**
		* pccard_read_tuple() - internal CIS tuple access
		* @s: the struct pcmcia_socket where the card is inserted
		* @function: the device function we loop for
		* @code: which CIS code shall we look for?
		* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
		*
		* pccard_read_tuple() reads out one tuple and attempts to parse it
		*/
		int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
		cisdata_t code, void *parse)
		{
		tuple_t tuple;
		cisdata_t *buf;
		int ret;

		buf = kmalloc(256, GFP_KERNEL);
		if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
		}
		tuple.DesiredTuple = code;
		tuple.Attributes = 0;
		if (function == BIND_FN_ALL)
		tuple.Attributes = TUPLE_RETURN_COMMON;
		ret = pccard_get_first_tuple(s, function, &tuple);
		if (ret != 0)
		goto done;
		tuple.TupleData = buf;
		tuple.TupleOffset = 0;
		tuple.TupleDataMax = 255;
		ret = pccard_get_tuple_data(s, &tuple);
		if (ret != 0)
		goto done;
		ret = pcmcia_parse_tuple(&tuple, parse);
		done:
		kfree(buf);
		return ret;
		}


		/**
		* pccard_loop_tuple() - loop over tuples in the CIS
		* @s: the struct pcmcia_socket where the card is inserted
		* @function: the device function we loop for
		* @code: which CIS code shall we look for?
		* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
		* @priv_data: private data to be passed to the loop_tuple function.
		* @loop_tuple: function to call for each CIS entry of type @function. IT
		* gets passed the raw tuple, the paresed tuple (if @parse is
		* set) and @priv_data.
		*
		* pccard_loop_tuple() loops over all CIS entries of type @function, and
		* calls the @loop_tuple function for each entry. If the call to @loop_tuple
		* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
		*/
		int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
		cisdata_t code, cisparse_t parse, void priv_data,
		int (loop_tuple) (tuple_t tuple,
		cisparse_t *parse,
		void *priv_data))
		{
		tuple_t tuple;
		cisdata_t *buf;
		int ret;

		buf = kzalloc(256, GFP_KERNEL);
		if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
		}

		tuple.TupleData = buf;
		tuple.TupleDataMax = 255;
		tuple.TupleOffset = 0;
		tuple.DesiredTuple = code;
		tuple.Attributes = 0;

		ret = pccard_get_first_tuple(s, function, &tuple);
		while (!ret) {
		if (pccard_get_tuple_data(s, &tuple))
		goto next_entry;

		if (parse)
		if (pcmcia_parse_tuple(&tuple, parse))
		goto next_entry;

		ret = loop_tuple(&tuple, parse, priv_data);
		if (!ret)
		break;

		next_entry:
		ret = pccard_get_next_tuple(s, function, &tuple);
		}

		kfree(buf);
		return ret;
		}


		/**
		* pccard_validate_cis() - check whether card has a sensible CIS
		* @s: the struct pcmcia_socket we are to check

drivers/pcmcia/pcmcia_cis.c

0 → 100644

+355 −0

Original line number	Diff line number	Diff line
		/*
		* PCMCIA high-level CIS access functions
		*
		* The initial developer of the original code is David A. Hinds
		* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
		* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
		*
		* Copyright (C) 1999 David A. Hinds
		* Copyright (C) 2004-2009 Dominik Brodowski
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*
		*/

		#include <linux/module.h>
		#include <linux/kernel.h>
		#include <linux/netdevice.h>

		#include <pcmcia/cs_types.h>
		#include <pcmcia/cisreg.h>
		#include <pcmcia/cistpl.h>
		#include <pcmcia/ss.h>
		#include <pcmcia/cs.h>
		#include <pcmcia/ds.h>
		#include "cs_internal.h"


		/**
		* pccard_read_tuple() - internal CIS tuple access
		* @s: the struct pcmcia_socket where the card is inserted
		* @function: the device function we loop for
		* @code: which CIS code shall we look for?
		* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
		*
		* pccard_read_tuple() reads out one tuple and attempts to parse it
		*/
		int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function,
		cisdata_t code, void *parse)
		{
		tuple_t tuple;
		cisdata_t *buf;
		int ret;

		buf = kmalloc(256, GFP_KERNEL);
		if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
		}
		tuple.DesiredTuple = code;
		tuple.Attributes = 0;
		if (function == BIND_FN_ALL)
		tuple.Attributes = TUPLE_RETURN_COMMON;
		ret = pccard_get_first_tuple(s, function, &tuple);
		if (ret != 0)
		goto done;
		tuple.TupleData = buf;
		tuple.TupleOffset = 0;
		tuple.TupleDataMax = 255;
		ret = pccard_get_tuple_data(s, &tuple);
		if (ret != 0)
		goto done;
		ret = pcmcia_parse_tuple(&tuple, parse);
		done:
		kfree(buf);
		return ret;
		}


		/**
		* pccard_loop_tuple() - loop over tuples in the CIS
		* @s: the struct pcmcia_socket where the card is inserted
		* @function: the device function we loop for
		* @code: which CIS code shall we look for?
		* @parse: buffer where the tuple shall be parsed (or NULL, if no parse)
		* @priv_data: private data to be passed to the loop_tuple function.
		* @loop_tuple: function to call for each CIS entry of type @function. IT
		* gets passed the raw tuple, the paresed tuple (if @parse is
		* set) and @priv_data.
		*
		* pccard_loop_tuple() loops over all CIS entries of type @function, and
		* calls the @loop_tuple function for each entry. If the call to @loop_tuple
		* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
		*/
		int pccard_loop_tuple(struct pcmcia_socket *s, unsigned int function,
		cisdata_t code, cisparse_t parse, void priv_data,
		int (loop_tuple) (tuple_t tuple,
		cisparse_t *parse,
		void *priv_data))
		{
		tuple_t tuple;
		cisdata_t *buf;
		int ret;

		buf = kzalloc(256, GFP_KERNEL);
		if (buf == NULL) {
		dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
		return -ENOMEM;
		}

		tuple.TupleData = buf;
		tuple.TupleDataMax = 255;
		tuple.TupleOffset = 0;
		tuple.DesiredTuple = code;
		tuple.Attributes = 0;

		ret = pccard_get_first_tuple(s, function, &tuple);
		while (!ret) {
		if (pccard_get_tuple_data(s, &tuple))
		goto next_entry;

		if (parse)
		if (pcmcia_parse_tuple(&tuple, parse))
		goto next_entry;

		ret = loop_tuple(&tuple, parse, priv_data);
		if (!ret)
		break;

		next_entry:
		ret = pccard_get_next_tuple(s, function, &tuple);
		}

		kfree(buf);
		return ret;
		}

		struct pcmcia_cfg_mem {
		struct pcmcia_device *p_dev;
		void *priv_data;
		int (conf_check) (struct pcmcia_device p_dev,
		cistpl_cftable_entry_t *cfg,
		cistpl_cftable_entry_t *dflt,
		unsigned int vcc,
		void *priv_data);
		cisparse_t parse;
		cistpl_cftable_entry_t dflt;
		};

		/**
		* pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
		*
		* pcmcia_do_loop_config() is the internal callback for the call from
		* pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
		* by a struct pcmcia_cfg_mem.
		*/
		static int pcmcia_do_loop_config(tuple_t tuple, cisparse_t parse, void *priv)
		{
		cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
		struct pcmcia_cfg_mem *cfg_mem = priv;

		/* default values */
		cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
		if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
		cfg_mem->dflt = *cfg;

		return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
		cfg_mem->p_dev->socket->socket.Vcc,
		cfg_mem->priv_data);
		}

		/**
		* pcmcia_loop_config() - loop over configuration options
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @conf_check: function to call for each configuration option.
		* It gets passed the struct pcmcia_device, the CIS data
		* describing the configuration option, and private data
		* being passed to pcmcia_loop_config()
		* @priv_data: private data to be passed to the conf_check function.
		*
		* pcmcia_loop_config() loops over all configuration options, and calls
		* the driver-specific conf_check() for each one, checking whether
		* it is a valid one. Returns 0 on success or errorcode otherwise.
		*/
		int pcmcia_loop_config(struct pcmcia_device *p_dev,
		int (conf_check) (struct pcmcia_device p_dev,
		cistpl_cftable_entry_t *cfg,
		cistpl_cftable_entry_t *dflt,
		unsigned int vcc,
		void *priv_data),
		void *priv_data)
		{
		struct pcmcia_cfg_mem *cfg_mem;
		int ret;

		cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
		if (cfg_mem == NULL)
		return -ENOMEM;

		cfg_mem->p_dev = p_dev;
		cfg_mem->conf_check = conf_check;
		cfg_mem->priv_data = priv_data;

		ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
		CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
		cfg_mem, pcmcia_do_loop_config);

		kfree(cfg_mem);
		return ret;
		}
		EXPORT_SYMBOL(pcmcia_loop_config);


		struct pcmcia_loop_mem {
		struct pcmcia_device *p_dev;
		void *priv_data;
		int (loop_tuple) (struct pcmcia_device p_dev,
		tuple_t *tuple,
		void *priv_data);
		};

		/**
		* pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
		*
		* pcmcia_do_loop_tuple() is the internal callback for the call from
		* pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
		* by a struct pcmcia_cfg_mem.
		*/
		static int pcmcia_do_loop_tuple(tuple_t tuple, cisparse_t parse, void *priv)
		{
		struct pcmcia_loop_mem *loop = priv;

		return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
		};

		/**
		* pcmcia_loop_tuple() - loop over tuples in the CIS
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @code: which CIS code shall we look for?
		* @priv_data: private data to be passed to the loop_tuple function.
		* @loop_tuple: function to call for each CIS entry of type @function. IT
		* gets passed the raw tuple and @priv_data.
		*
		* pcmcia_loop_tuple() loops over all CIS entries of type @function, and
		* calls the @loop_tuple function for each entry. If the call to @loop_tuple
		* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
		*/
		int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
		int (loop_tuple) (struct pcmcia_device p_dev,
		tuple_t *tuple,
		void *priv_data),
		void *priv_data)
		{
		struct pcmcia_loop_mem loop = {
		.p_dev = p_dev,
		.loop_tuple = loop_tuple,
		.priv_data = priv_data};

		return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
		&loop, pcmcia_do_loop_tuple);
		}
		EXPORT_SYMBOL(pcmcia_loop_tuple);


		struct pcmcia_loop_get {
		size_t len;
		cisdata_t **buf;
		};

		/**
		* pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
		*
		* pcmcia_do_get_tuple() is the internal callback for the call from
		* pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
		* the first tuple, return 0 unconditionally. Create a memory buffer large
		* enough to hold the content of the tuple, and fill it with the tuple data.
		* The caller is responsible to free the buffer.
		*/
		static int pcmcia_do_get_tuple(struct pcmcia_device p_dev, tuple_t tuple,
		void *priv)
		{
		struct pcmcia_loop_get *get = priv;

		*get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
		if (*get->buf) {
		get->len = tuple->TupleDataLen;
		memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
		} else
		dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
		return 0;
		}

		/**
		* pcmcia_get_tuple() - get first tuple from CIS
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @code: which CIS code shall we look for?
		* @buf: pointer to store the buffer to.
		*
		* pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
		* It returns the buffer length (or zero). The caller is responsible to free
		* the buffer passed in @buf.
		*/
		size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
		unsigned char **buf)
		{
		struct pcmcia_loop_get get = {
		.len = 0,
		.buf = buf,
		};

		*get.buf = NULL;
		pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);

		return get.len;
		}
		EXPORT_SYMBOL(pcmcia_get_tuple);


		/**
		* pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
		*
		* pcmcia_do_get_mac() is the internal callback for the call from
		* pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
		* tuple contains a proper LAN_NODE_ID of length 6, and copy the data
		* to struct net_device->dev_addr[i].
		*/
		static int pcmcia_do_get_mac(struct pcmcia_device p_dev, tuple_t tuple,
		void *priv)
		{
		struct net_device *dev = priv;
		int i;

		if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
		return -EINVAL;
		if (tuple->TupleDataLen < ETH_ALEN + 2) {
		dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
		"LAN_NODE_ID\n");
		return -EINVAL;
		}

		if (tuple->TupleData[1] != ETH_ALEN) {
		dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
		return -EINVAL;
		}
		for (i = 0; i < 6; i++)
		dev->dev_addr[i] = tuple->TupleData[i+2];
		return 0;
		}

		/**
		* pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
		* @p_dev: the struct pcmcia_device for which we want the address.
		* @dev: a properly prepared struct net_device to store the info to.
		*
		* pcmcia_get_mac_from_cis() reads out the hardware MAC address from
		* CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
		* must be set up properly by the driver (see examples!).
		*/
		int pcmcia_get_mac_from_cis(struct pcmcia_device p_dev, struct net_device dev)
		{
		return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
		}
		EXPORT_SYMBOL(pcmcia_get_mac_from_cis);

drivers/pcmcia/pcmcia_resource.c

+0 −229

Original line number	Diff line number	Diff line
		@@ -923,232 +923,3 @@ void pcmcia_disable_device(struct pcmcia_device *p_dev)
		pcmcia_release_window(p_dev, p_dev->win);
		}
		EXPORT_SYMBOL(pcmcia_disable_device);


		struct pcmcia_cfg_mem {
		struct pcmcia_device *p_dev;
		void *priv_data;
		int (conf_check) (struct pcmcia_device p_dev,
		cistpl_cftable_entry_t *cfg,
		cistpl_cftable_entry_t *dflt,
		unsigned int vcc,
		void *priv_data);
		cisparse_t parse;
		cistpl_cftable_entry_t dflt;
		};

		/**
		* pcmcia_do_loop_config() - internal helper for pcmcia_loop_config()
		*
		* pcmcia_do_loop_config() is the internal callback for the call from
		* pcmcia_loop_config() to pccard_loop_tuple(). Data is transferred
		* by a struct pcmcia_cfg_mem.
		*/
		static int pcmcia_do_loop_config(tuple_t tuple, cisparse_t parse, void *priv)
		{
		cistpl_cftable_entry_t *cfg = &parse->cftable_entry;
		struct pcmcia_cfg_mem *cfg_mem = priv;

		/* default values */
		cfg_mem->p_dev->conf.ConfigIndex = cfg->index;
		if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
		cfg_mem->dflt = *cfg;

		return cfg_mem->conf_check(cfg_mem->p_dev, cfg, &cfg_mem->dflt,
		cfg_mem->p_dev->socket->socket.Vcc,
		cfg_mem->priv_data);
		}

		/**
		* pcmcia_loop_config() - loop over configuration options
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @conf_check: function to call for each configuration option.
		* It gets passed the struct pcmcia_device, the CIS data
		* describing the configuration option, and private data
		* being passed to pcmcia_loop_config()
		* @priv_data: private data to be passed to the conf_check function.
		*
		* pcmcia_loop_config() loops over all configuration options, and calls
		* the driver-specific conf_check() for each one, checking whether
		* it is a valid one. Returns 0 on success or errorcode otherwise.
		*/
		int pcmcia_loop_config(struct pcmcia_device *p_dev,
		int (conf_check) (struct pcmcia_device p_dev,
		cistpl_cftable_entry_t *cfg,
		cistpl_cftable_entry_t *dflt,
		unsigned int vcc,
		void *priv_data),
		void *priv_data)
		{
		struct pcmcia_cfg_mem *cfg_mem;
		int ret;

		cfg_mem = kzalloc(sizeof(struct pcmcia_cfg_mem), GFP_KERNEL);
		if (cfg_mem == NULL)
		return -ENOMEM;

		cfg_mem->p_dev = p_dev;
		cfg_mem->conf_check = conf_check;
		cfg_mem->priv_data = priv_data;

		ret = pccard_loop_tuple(p_dev->socket, p_dev->func,
		CISTPL_CFTABLE_ENTRY, &cfg_mem->parse,
		cfg_mem, pcmcia_do_loop_config);

		kfree(cfg_mem);
		return ret;
		}
		EXPORT_SYMBOL(pcmcia_loop_config);


		struct pcmcia_loop_mem {
		struct pcmcia_device *p_dev;
		void *priv_data;
		int (loop_tuple) (struct pcmcia_device p_dev,
		tuple_t *tuple,
		void *priv_data);
		};

		/**
		* pcmcia_do_loop_tuple() - internal helper for pcmcia_loop_config()
		*
		* pcmcia_do_loop_tuple() is the internal callback for the call from
		* pcmcia_loop_tuple() to pccard_loop_tuple(). Data is transferred
		* by a struct pcmcia_cfg_mem.
		*/
		static int pcmcia_do_loop_tuple(tuple_t tuple, cisparse_t parse, void *priv)
		{
		struct pcmcia_loop_mem *loop = priv;

		return loop->loop_tuple(loop->p_dev, tuple, loop->priv_data);
		};

		/**
		* pcmcia_loop_tuple() - loop over tuples in the CIS
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @code: which CIS code shall we look for?
		* @priv_data: private data to be passed to the loop_tuple function.
		* @loop_tuple: function to call for each CIS entry of type @function. IT
		* gets passed the raw tuple and @priv_data.
		*
		* pcmcia_loop_tuple() loops over all CIS entries of type @function, and
		* calls the @loop_tuple function for each entry. If the call to @loop_tuple
		* returns 0, the loop exits. Returns 0 on success or errorcode otherwise.
		*/
		int pcmcia_loop_tuple(struct pcmcia_device *p_dev, cisdata_t code,
		int (loop_tuple) (struct pcmcia_device p_dev,
		tuple_t *tuple,
		void *priv_data),
		void *priv_data)
		{
		struct pcmcia_loop_mem loop = {
		.p_dev = p_dev,
		.loop_tuple = loop_tuple,
		.priv_data = priv_data};

		return pccard_loop_tuple(p_dev->socket, p_dev->func, code, NULL,
		&loop, pcmcia_do_loop_tuple);
		}
		EXPORT_SYMBOL(pcmcia_loop_tuple);


		struct pcmcia_loop_get {
		size_t len;
		cisdata_t **buf;
		};

		/**
		* pcmcia_do_get_tuple() - internal helper for pcmcia_get_tuple()
		*
		* pcmcia_do_get_tuple() is the internal callback for the call from
		* pcmcia_get_tuple() to pcmcia_loop_tuple(). As we're only interested in
		* the first tuple, return 0 unconditionally. Create a memory buffer large
		* enough to hold the content of the tuple, and fill it with the tuple data.
		* The caller is responsible to free the buffer.
		*/
		static int pcmcia_do_get_tuple(struct pcmcia_device p_dev, tuple_t tuple,
		void *priv)
		{
		struct pcmcia_loop_get *get = priv;

		*get->buf = kzalloc(tuple->TupleDataLen, GFP_KERNEL);
		if (*get->buf) {
		get->len = tuple->TupleDataLen;
		memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
		} else
		dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
		return 0;
		}

		/**
		* pcmcia_get_tuple() - get first tuple from CIS
		* @p_dev: the struct pcmcia_device which we need to loop for.
		* @code: which CIS code shall we look for?
		* @buf: pointer to store the buffer to.
		*
		* pcmcia_get_tuple() gets the content of the first CIS entry of type @code.
		* It returns the buffer length (or zero). The caller is responsible to free
		* the buffer passed in @buf.
		*/
		size_t pcmcia_get_tuple(struct pcmcia_device *p_dev, cisdata_t code,
		unsigned char **buf)
		{
		struct pcmcia_loop_get get = {
		.len = 0,
		.buf = buf,
		};

		*get.buf = NULL;
		pcmcia_loop_tuple(p_dev, code, pcmcia_do_get_tuple, &get);

		return get.len;
		}
		EXPORT_SYMBOL(pcmcia_get_tuple);


		/**
		* pcmcia_do_get_mac() - internal helper for pcmcia_get_mac_from_cis()
		*
		* pcmcia_do_get_mac() is the internal callback for the call from
		* pcmcia_get_mac_from_cis() to pcmcia_loop_tuple(). We check whether the
		* tuple contains a proper LAN_NODE_ID of length 6, and copy the data
		* to struct net_device->dev_addr[i].
		*/
		static int pcmcia_do_get_mac(struct pcmcia_device p_dev, tuple_t tuple,
		void *priv)
		{
		struct net_device *dev = priv;
		int i;

		if (tuple->TupleData[0] != CISTPL_FUNCE_LAN_NODE_ID)
		return -EINVAL;
		if (tuple->TupleDataLen < ETH_ALEN + 2) {
		dev_warn(&p_dev->dev, "Invalid CIS tuple length for "
		"LAN_NODE_ID\n");
		return -EINVAL;
		}

		if (tuple->TupleData[1] != ETH_ALEN) {
		dev_warn(&p_dev->dev, "Invalid header for LAN_NODE_ID\n");
		return -EINVAL;
		}
		for (i = 0; i < 6; i++)
		dev->dev_addr[i] = tuple->TupleData[i+2];
		return 0;
		}

		/**
		* pcmcia_get_mac_from_cis() - read out MAC address from CISTPL_FUNCE
		* @p_dev: the struct pcmcia_device for which we want the address.
		* @dev: a properly prepared struct net_device to store the info to.
		*
		* pcmcia_get_mac_from_cis() reads out the hardware MAC address from
		* CISTPL_FUNCE and stores it into struct net_device *dev->dev_addr which
		* must be set up properly by the driver (see examples!).
		*/
		int pcmcia_get_mac_from_cis(struct pcmcia_device p_dev, struct net_device dev)
		{
		return pcmcia_loop_tuple(p_dev, CISTPL_FUNCE, pcmcia_do_get_mac, dev);
		}
		EXPORT_SYMBOL(pcmcia_get_mac_from_cis);