// the code:
int shim_osLoadFWImageOLD(unsigned char *ptr)
{
  unsigned int bytesRead;
  mm_segment_t  oldfs;  
  static struct file *filp;
  unsigned int imageLength=0x4ffff;  
   
    
  dprintf(4, "tn7dsl_read_dsp()\n");

  dprintf(4,"open file %s\n", DSP_FIRMWARE_PATH);
  
  filp=filp_open(DSP_FIRMWARE_PATH
                                  ,00,O_RDONLY);
      
  if(filp ==NULL)
  {
    printk("Failed: Could not open DSP binary file\n");
          return -1;
  }
      
  if (filp->f_op->read==NULL)
          return -1;  /* File(system) doesn't allow reads */

        /* Now read bytes from postion "StartPos" */
        filp->f_pos = 0;
  oldfs = get_fs();
        set_fs(KERNEL_DS);
        bytesRead = filp->f_op->read(filp,ptr,imageLength,&filp->f_pos);

  dprintf(4,"file length = %d\n", bytesRead);

  set_fs(oldfs);

        /* Close the file */
        fput(filp); 
    
  return bytesRead;
}

static struct device avsar = {
	.bus_id    = "vlynq",
};

int shim_osLoadFWImage(unsigned char *ptr)
{
	const char *file = "ar0700xx";
	const struct firmware *fw_entry;
	printk("requesting firmware image '%s'\n", file);

	if(request_firmware(&fw_entry, file, &avsar)) {
/*		printk(KERN_ERR
				"avsar: Firmware not available\n");
		return -1;*/
		printk(KERN_ERR
				"avsar: Firmware not available, calling old function...\n");
		return shim_osLoadFWImageOLD(ptr);
	}
	if(fw_entry->size > 0x4ffff) {
			printk(KERN_ERR
			"avsar: Firmware too big (%d bytes), calling old function...\n", fw_entry->size);
			return -1;
		}
	memcpy(ptr, fw_entry->data, fw_entry->size);
	release_firmware(fw_entry);
	return fw_entry->size;
}

/* the result:
requesting firmware image 'ar0700xx'
BUG: warning at lib/kref.c:32/kref_get()
Call Trace:
[<9410a940>] dump_stack+0x8/0x34
[<941fc068>] kref_get+0x44/0xdc
[<941fb188>] kobject_get+0x20/0x34
[<941b7380>] sysfs_create_link+0xec/0x16c
[<9422c830>] class_device_add+0x254/0x560
[<942309a0>] _request_firmware+0x170/0x494
[<c010bbdc>] shim_osLoadFWImage+0x50/0xf0 [tiatm]
[<c01135a0>] dslhal_api_dslStartup+0x100/0x320 [tiatm]
[<c010c494>] tn7dsl_init+0x50/0x65c [tiatm]
[<c00a0180>] tn7atm_detect+0x180/0x54c [tiatm]
[<94148c14>] sys_init_module+0x1628/0x18a0
[<9410cc00>] stack_done+0x20/0x3c

fw_register_class_device: class_device_register failed
avsar: Firmware not available, calling old function... */