[deliverable/linux.git] / drivers / pnp / support.c

/*
 * support.c - standard functions for the use of pnp protocol drivers
 *
 * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
 */

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

/**
 * pnp_is_active - Determines if a device is active based on its current
 *	resources
 * @dev: pointer to the desired PnP device
 */
int pnp_is_active(struct pnp_dev *dev)
{
	if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
	    !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
	    pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
		return 0;
	else
		return 1;
}

EXPORT_SYMBOL(pnp_is_active);
Commit	Line	Data
1da177e4	1	/*
07d4e9af	2	* support.c - standard functions for the use of pnp protocol drivers
1da177e4 LT	3	*
1da177e4 LT	4	* Copyright 2003 Adam Belay <ambx1@neo.rr.com>
1da177e4 LT	5	*/
1da177e4 LT	6
1da177e4 LT	7	#include <linux/module.h>
1da177e4 LT	8	#include <linux/ctype.h>
1da177e4 LT	9	#include <linux/pnp.h>
	10	#include "base.h"
	11
	12	/**
07d4e9af BH	13	* pnp_is_active - Determines if a device is active based on its current
07d4e9af BH	14	* resources
1da177e4	15	* @dev: pointer to the desired PnP device
1da177e4	16	*/
9dd78466	17	int pnp_is_active(struct pnp_dev *dev)
1da177e4 LT	18	{
	19	if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
	20	!pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
9dd78466 BH	21	pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
9dd78466 BH	22	return 0;
1da177e4 LT	23	else
	24	return 1;
	25	}
	26
1da177e4	27	EXPORT_SYMBOL(pnp_is_active);