On Mon, 11 Mar 2013, Sarah Sharp wrote: > On Mon, Mar 11, 2013 at 02:50:57PM +0800, Joshua wrote: ... > > Recently, I read the EHCI 1.1 addendum specification. I noticed there > > are some implementations in kernel for that spec by intel engineers, > > but i didn't find the "Hardware Prefetching" support . Did the kernel > > support that feature? > > I doubt there have such a EHCI that supports the EHCI 1.1. > > What would an EHCI addendum have to do with your particular bug? Or is > this a different question? > > Alan Stern would probably be the best person to ask this question, since > he's the EHCI maintainer. ehci-hcd does not support Hardware Prefetching. Since Intel played a big role in designing the EHCI 1.1 addendum, it seems likely that they made some EHCI controllers supporting those extensions. But I don't know the details, and I don't know if the controllers in the current chipsets support EHCI-1.1. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
