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-rw-r--r--drivers/pnp/support.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/pnp/support.c b/drivers/pnp/support.c
new file mode 100644
index 000000000000..b952aec49189
--- /dev/null
+++ b/drivers/pnp/support.c
@@ -0,0 +1,40 @@
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
27int 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
40EXPORT_SYMBOL(pnp_is_active);