-/* in recent 2.5 interrupt handlers have non-void return value */
-#ifndef IRQ_RETVAL
-typedef void irqreturn_t;
-#define IRQ_NONE
-#define IRQ_HANDLED
-#define IRQ_RETVAL(x)
-#endif
-
-/* some stuff need to check kernelversion. Not all 2.5 stuff was present
- * in early 2.5.x - the test is merely to separate 2.4 from 2.5
- */
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-
-/* PDE() introduced in 2.5.4 */
-#ifdef CONFIG_PROC_FS
-#define PDE(inode) ((inode)->u.generic_ip)
-#endif
-
-/* irda crc16 calculation exported in 2.5.42 */
-#define irda_calc_crc16(fcs,buf,len) (GOOD_FCS)
-
-/* we use this for unified pci device name access */
-#define PCIDEV_NAME(pdev) ((pdev)->name)
-
-#else /* 2.5 or later */
-
-/* recent 2.5/2.6 stores pci device names at varying places ;-) */
-#ifdef CONFIG_PCI_NAMES
-/* human readable name */
-#define PCIDEV_NAME(pdev) ((pdev)->pretty_name)
-#else
-/* whatever we get from the associated struct device - bus:slot:dev.fn id */
-#define PCIDEV_NAME(pdev) (pci_name(pdev))
-#endif
-
-#endif
-