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1da177e4 LT |
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 | ||
12 | #ifdef CONFIG_PNP_DEBUG | |
13 | #define DEBUG | |
14 | #else | |
15 | #undef DEBUG | |
16 | #endif | |
17 | ||
18 | #include <linux/pnp.h> | |
19 | #include "base.h" | |
20 | ||
21 | /** | |
22 | * pnp_is_active - Determines if a device is active based on its current resources | |
23 | * @dev: pointer to the desired PnP device | |
24 | * | |
25 | */ | |
26 | ||
27 | int pnp_is_active(struct pnp_dev * dev) | |
28 | { | |
29 | if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 && | |
30 | !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 && | |
31 | pnp_irq(dev, 0) == -1 && | |
32 | pnp_dma(dev, 0) == -1) | |
33 | return 0; | |
34 | else | |
35 | return 1; | |
36 | } | |
37 | ||
38 | ||
39 | ||
40 | EXPORT_SYMBOL(pnp_is_active); |