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); 28