Re: FUSB200 xhci issue

Am 31.07.2013 08:52, schrieb Oleksij Rempel:

Am 28.07.2013 22:41, schrieb Christian Lamparter:

quoted

On Sunday, July 28, 2013 04:28:25 PM Oleksij Rempel wrote:

quoted

Am 28.07.2013 14:12, schrieb Oleksij Rempel:

quoted

Am 28.07.2013 13:38, schrieb Christian Lamparter:

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    before  rmmod.

Oh, I it was on the latest wireless-testing. (And the "ath9k_htc"
module
had the patch "ath9k_htc: reboot firmwware if it was loaded").

Furthermore, I did the same test with one of the ehci-only ports
and it worked. Both, devices (one had a AR7015, the other a AR9271)
came back after autosuspend there.

Grrr... so it brings us back to xhci issue. Even EP4 workaround wont
work here :( Suddenly i have no more ideas.

Sarah, it's your turn now.

Christian,
can you please provide some more info about your xhci controller. I'll
try to get me same.

Well, it's a laptop (HP DV6-6003EG). I recon that getting 100% the
same setup will be difficult. However, since the uPD720200 was/is
very popular, it should be very easy to find one. [It's probably
on all of these "10 euro usb-3.0 pcie-adapters". So as long as you
got a free 1x-pcie port you should be good.]

Here's the lspci summary:

19:00.0 USB controller [0c03]: NEC Corporation uPD720200 USB 3.0 Host
Controller [1033:0194] (rev 04) (prog-if 30 [XHCI])
         Subsystem: Hewlett-Packard Company Device [103c:1657]
         Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
         Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast

quoted

TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-

         Latency: 0, Cache Line Size: 64 bytes
         Interrupt: pin A routed to IRQ 19
         Region 0: Memory at d3400000 (64-bit, non-prefetchable)
[size=8K]
         Capabilities: <access denied>
         Kernel driver in use: xhci_hcd

Thx... i purchased on random on ebay, will see what i get.

I know now why carl9170 don't triggering this bug. Carl uses EP4 as
Interrupt with packet size 64. ath9k-htc initially have EP4=Intr,
Interval=1, but will reconfigure it to Bulk, Interval=0.
It mean, before usb suspend EP4=Bulk, Interval=0 and after resume
EP4=Intr, Inter=?. May be xhci can't handle some thing like this? Or may
be interval stay 0, and xhci will overfill usb buffer on adapter - at
least it looks so.

Christian,
can you please test one more patch. It is working for me, but who knows. 
More testing is never bad idea ;)

-- 
Regards,
Oleksij