tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * support.c - provides standard pnp functions for the use of pnp protocol drivers,
3 *
4 * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
5 *
6 */
7
8#include <linux/config.h>
9#include <linux/module.h>
10#include <linux/ctype.h>
11#include <linux/pnp.h>
12#include "base.h"
13
14/**
15 * pnp_is_active - Determines if a device is active based on its current resources
16 * @dev: pointer to the desired PnP device
17 *
18 */
19
20int pnp_is_active(struct pnp_dev * dev)
21{
22 if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
23 !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
24 pnp_irq(dev, 0) == -1 &&
25 pnp_dma(dev, 0) == -1)
26 return 0;
27 else
28 return 1;
29}
30
31
32
33EXPORT_SYMBOL(pnp_is_active);