ssb_hcd_device
struct ssb_hcd_device *usb_dev;
usb_dev = devm_kzalloc(dev->dev, sizeof(struct ssb_hcd_device),
struct ssb_hcd_device *usb_dev = ssb_get_drvdata(dev);
struct ssb_hcd_device *usb_dev = ssb_get_drvdata(dev);