On 29.09.2013 02:50, Arokux X wrote: > Dear Alan, > >> I don't know. Did you run all these tests on the same computer? > > Yes, it is a single board computer, see image here: > > http://rhombus-tech.net/allwinner_a10/hacking_the_mele_a1000/A10_device_a1000_inside.jpg > > WLAN Adapter is left at the bottom. > >> What happens if you back-port your glue driver to the vendor's kernel? > > I have now 200 lines of code which are (almost) identical. They work > in vendor's kernel and fail in mainline. > >> This isn't surprising. The errors you are getting are hardware errors, >> not protocol errors. They could be caused by excessive noise in the >> USB data lines. Or there could be some sort of timing issue. > > I've noticed there is ehci-timer.c now. It wasn't present at 3.4 > times. The main clock of the SoC I'm working on is running at 24Mhz. > There are no hstimers implemented. Do you think it can be the problem? > > A have tested several other USB devices: keyboard and Ethernet > adapter. They worked. I'm not sure whether these test are "clean" > since I connect them to the USB ports which are behind on-board 4-port > USB hub. The hub is connected to the first USB host controller. The > wifi module however is connected to the second USB host controller > directly. I tested your mainline ehci patches with sun4i (cubieboard). My rtl8129cu dongle works fine on both ports (connect to AP with WPA2). I also tested storage device, rndis_wlan and zd1211rw wifi dongles and all worked well. -Jussi > > Do you have any ideas how can I troubleshoot this issue further? Is > there any chance of regression in EHCI stack? > > Best regards, > Arokux > -- > 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 > -- 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
