#include <linux/device.h>
#include <linux/firmware.h>

static DECLARE_COMPLETION( obj_not_in_use );

static void firmware_device_release( struct device *dev )
{
	complete( &obj_not_in_use );
}

static struct device fwasync_device = {
	.bus_id    = "fwasync",
	.release   = firmware_device_release,
};

static void fwasync_cont(const struct firmware *fw, void *private_data)
{
	unsigned char buf[80+1];
	int to_copy;

	if(fw==NULL){
		printk("fwasync_cont: firmware load failed\n");
		return;
	}
	to_copy = min( (sizeof(buf)-1), fw->size );
	memcpy(buf, fw->data, to_copy);
	buf[to_copy] = '\0';
	printk("firmware(%d): \"%s\"\n", (int)fw->size, buf);
}

static int __init fwasync_init(void)
{
	if( device_register( &fwasync_device ) ) {
		printk("device_register failed\n");
		return -EIO;
	}
	if( request_firmware_nowait(THIS_MODULE,
		FW_ACTION_NOHOTPLUG,
		"pseudo_firmware", &fwasync_device,
		"private_data", fwasync_cont) ) {
		printk("fwasync: request_firmware_nowait failed\n");
		device_unregister( &fwasync_device );
		return -EIO;
	}
	return 0;
}

static void __exit fwasync_exit(void)
{
	device_unregister( &fwasync_device );
	wait_for_completion( &obj_not_in_use );
}

module_init(fwasync_init);
module_exit(fwasync_exit);
MODULE_LICENSE("GPL");