Sstrhsrtj

I've written my module for gamepad that plugged by USB. I've already check that my installed module detects my device successfully and even calls "probe" method:

    static struct usb_driver driver =

{

    .name = "Driver#1",

    .id_table = table,

    .probe = probe,

    .disconnect = disconnect,

};

I have also written special urb function, that should "talk" with my device

usb_fill_int_urb(j->irq_in, udev,

             usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress), //!

             j->idata, 32, irq_hh,

             j, ep_irq_in->bInterval); 

But I cannot understand how to initialize action of irq_in. I presume that I need to press something and some information should be written in j->idata. I also did

usb_submit_urb(j->irq_in, GFP_KERNEL);

But nothing happens! Why?
My probe function:

static void irq_hh(struct urb *urb)

{

    struct devicec *j = urb->context;/*В какую структура из всех процессов дб заполнена после приёма данных???*/

        char *data = j->idata;

    printk(KERN_INFO "irq_hh: %s", data);

}



static int probe(struct usb_interface *intf, const struct usb_device_id *id)

{

    struct usb_device *udev; //!

    struct usb_endpoint_descriptor *ep_irq_in;  



    int ep_irq_in_idx, error;

    printk(KERN_INFO "probe...%X",id->idVendor);

    j = kzalloc(sizeof(struct devicec), GFP_KERNEL);

    udev = interface_to_usbdev(intf);

    j->irq_in = usb_alloc_urb(0, GFP_KERNEL); 

    //--------------------------------------

    j->udev = udev;

    j->intf = intf;

    //--------------------------------------

    usb_make_path(udev, j->phys, sizeof(j->phys));

    strlcat(j->phys, "/input101", sizeof(j->phys));

    printk(KERN_INFO "%s",j->phys);



    ep_irq_in_idx = 0;

    ep_irq_in = &intf->cur_altsetting->endpoint[ep_irq_in_idx].desc;



    usb_fill_int_urb(j->irq_in, udev,

             usb_rcvintpipe(udev, ep_irq_in->bEndpointAddress), //!

             j->idata, 32, irq_hh,

             j, ep_irq_in->bInterval); 



    j->irq_in->transfer_dma = j->idata_dma;

    j->irq_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;



    error = usb_submit_urb(j->irq_in, GFP_KERNEL);



    printk(KERN_INFO "%d",error);



    return 0;

}