deviation-devo10-v4.0.1-265430d USB wont turn off

static struct usb_page * const up = &pagemem.u.usb_page;

static void _draw_page(u8 enable);

void wait_release();
void wait_press();

unsigned usb_cb(u32 button, unsigned flags, void *data)
{
    (void)button;
    (void)data;
    if(flags == BUTTON_RELEASE) {
        _draw_page(1);
        GUI_RefreshScreen();
        USB_Enable(0, 1);
        wait_release();
        wait_press();
        wait_release();
        USB_Disable();
        _draw_page(0);
    }
    return 1;
}

void PAGE_USBInit(int page)
{
    (void)page;
    PAGE_SetModal(0);
    _draw_page(0);
    BUTTON_RegisterCallback(&up->action, CHAN_ButtonMask(BUT_ENTER), BUTTON_PRESS | BUTTON_RELEASE | BUTTON_PRIORITY, usb_cb, NULL);
}

void PAGE_USBExit()
{
    BUTTON_UnregisterCallback(&up->action);
}

unsigned usb_cb(u32 button, unsigned flags, void *data)
{
    (void)button;
    (void)data;
    if(flags == BUTTON_RELEASE) { # here
        _draw_page(1);
        GUI_RefreshScreen();
        USB_Enable(0, 1);
        wait_release();  #here
        wait_press();
        wait_release(); #here
        USB_Disable();
        _draw_page(0);
    }
    return 1;
}