kbtab
struct kbtab *kbtab = input_get_drvdata(dev);
usb_kill_urb(kbtab->irq);
struct kbtab *kbtab;
kbtab = kzalloc_obj(*kbtab);
if (!kbtab || !input_dev)
kbtab->data = usb_alloc_coherent(dev, 8, GFP_KERNEL, &kbtab->data_dma);
if (!kbtab->data)
kbtab->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!kbtab->irq)
kbtab->intf = intf;
kbtab->dev = input_dev;
usb_make_path(dev, kbtab->phys, sizeof(kbtab->phys));
strlcat(kbtab->phys, "/input0", sizeof(kbtab->phys));
input_dev->phys = kbtab->phys;
input_set_drvdata(input_dev, kbtab);
usb_fill_int_urb(kbtab->irq, dev,
kbtab->data, 8,
kbtab_irq, kbtab, endpoint->bInterval);
kbtab->irq->transfer_dma = kbtab->data_dma;
kbtab->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
error = input_register_device(kbtab->dev);
usb_set_intfdata(intf, kbtab);
fail3: usb_free_urb(kbtab->irq);
fail2: usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma);
kfree(kbtab);
struct kbtab *kbtab = usb_get_intfdata(intf);
input_unregister_device(kbtab->dev);
usb_free_urb(kbtab->irq);
usb_free_coherent(udev, 8, kbtab->data, kbtab->data_dma);
kfree(kbtab);
struct kbtab *kbtab = urb->context;
unsigned char *data = kbtab->data;
struct input_dev *dev = kbtab->dev;
dev_dbg(&kbtab->intf->dev,
dev_dbg(&kbtab->intf->dev,
dev_err(&kbtab->intf->dev,
struct kbtab *kbtab = input_get_drvdata(dev);
struct usb_device *udev = interface_to_usbdev(kbtab->intf);
kbtab->irq->dev = udev;
if (usb_submit_urb(kbtab->irq, GFP_KERNEL))