xref: /openbmc/linux/drivers/pnp/support.c (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
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 
20 int 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 
33 EXPORT_SYMBOL(pnp_is_active);
34