Re: [PATCH v2] usb: xhci: fix interrupt transfer error happened on MTK platforms

Hi,

On Fri, 2018-09-07 at 09:42 +0200, Greg Kroah-Hartman wrote:

On Fri, Sep 07, 2018 at 03:29:12PM +0800, Chunfeng Yun wrote:

quoted

The MTK xHCI controller use some reserved bytes in endpoint context for
bandwidth scheduling, so need keep them in xhci_endpoint_copy();

If they are "reserved" shouldn't they be properly named?  And by using
reserved bytes, isn't that a spec violation?

It indeed violates the spec, "they shall be treated by system software
as Reserved and Opaque", and it's a quirk of the MTK xHCI controller.

thanks,

greg k-h