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

[Chunfeng Yun]

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:
> > 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