On Mon, Mar 11, 2013 at 10:21:57PM -0400, Alan Stern wrote: > 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. I'll ask the hardware architects if any Intel EHCI host supports it. Sarah Sharp -- 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
