| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |