I'm writing a kernel module that receives interrupts for mpc8308 (PowerPC) board. when I make the code for Ubuntu and my current version of kernel it works well with interrupt of keyboard, but when I Cross build it for mpc8308 board (2.6.29.6 kernel) and I want to load it into kernel with insmod command I get error:insmod: cannot insert './intrpt.ko': Function not implementedmy code is:#include <linux/kernel.h>#include <linux/module.h>#include <linux/interrupt.h>#define DRIVER_AUTHOR AVM#define DRIVER_DESC A sample driverstatic irqreturn_t irq_handler(int irq, void *dev_id, struct pt_regs *regs){  printk(KERN_ALERT Hello Interrupt world.\n);  return IRQ_HANDLED;}/** Initialize the module  register the IRQ handler*/int init_module(){  free_irq(1, NULL);  return request_irq(1, irq_handler, IRQF_SHARED, test_keyboard_irq_handler,                    (void *)(irq_handler));}/** Cleanup*/void cleanup_module(){  free_irq(1, NULL);}MODULE_LICENSE(GPL);MODULE_AUTHOR(DRIVER_AUTHOR);MODULE_DESCRIPTION(DRIVER_DESC);MODULE_SUPPORTED_DEVICE(testdevice);and output of modinfo ./intrpt.ko is:filename:       ./intrpt.kodescription:    A sample driverauthor:          license:        GPLdepends:        vermagic:       2.6.29.6-rt23 mod_unload
insmod: cannot insert './intrpt.ko': Function not implemented
linux;kernel;embedded