Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-2.6] / drivers / pnp / support.c
1 /*
2  * support.c - standard functions for the use of pnp protocol drivers
3  *
4  * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
5  */
6
7 #include <linux/module.h>
8 #include <linux/ctype.h>
9 #include <linux/pnp.h>
10 #include "base.h"
11
12 /**
13  * pnp_is_active - Determines if a device is active based on its current
14  *      resources
15  * @dev: pointer to the desired PnP device
16  */
17 int pnp_is_active(struct pnp_dev *dev)
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 &&
21             pnp_irq(dev, 0) == -1 && pnp_dma(dev, 0) == -1)
22                 return 0;
23         else
24                 return 1;
25 }
26
27 EXPORT_SYMBOL(pnp_is_active);