On Fri, Feb 26, 2021 at 04:21:37PM +0800, Longfang Liu wrote: > Our current XHCI hardware controller has been customized to only > support USB 2.0 ports. When using the current xhci driver, an xhci > controller device and an ehci controller device will be created > automatically. That sentence makes no sense at all. An EHCI controller device is a piece of hardware. How can an xHCI driver, which is a piece of software, create a piece of hardware? Alan Stern
