Messages in this thread | | | From | Arnd Bergmann <> | Subject | Re: [PATCH 1/3] driver for mcs7830 (aka DeLOCK) USB ethernet adapter | Date | Thu, 28 Sep 2006 13:07:21 +0200 |
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On Thursday 28 September 2006 03:28, David Brownell wrote: > ... yes, I'd assume it's a hardware issue too. Try different > cables; if you have a fast 'scope, you might see what kind of > eye diagram you get.
Unfortunately, I don't have anything I could use to test this.
> Do you know how the remote wakeup mechanism works for this chip? > It'd be interesting to see "usbnet" be taught how to autosuspend > chips which will wake up the USB host when they get the right > kind of packet ... for example, passing the multicast/broadcast > filter, or addressed directly to that adapter. > > Such an autosuspend mechanism would let the host controller stop > polling a mostly-idle network link, getting rid of one source of > periodic DMA transfers and thus allowing deeper sleep states for > many x86 family CPUs. And also, I'd expect, giving fewer > opportunities for those broken RX packets. :)
No, don't know. I did not find anything about this in the public spec.
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