cmpxchg wrote: > The sigrok Cypress FX2 / fx2lafw driver also failed to work reliably on > my Intel Core i7 featuring USB 3.0 ports. In this case the USB 3.0 ports > are provided by an ASmedia USB 3.0 controller (one variant of xHCI). > The error is 'no room on ep ring'. I did not see this error on a > Renesas/NEC-based xHCI controller on the same machine. > > I'm running on debian 3.2 kernel. Backporting only the Linux 3.4 USB xHCI > /hcd/hub changes was surprisingly straightforward and enabled the FX2 > sampling @ 24 MHz via the ASmedia xHCI controller. > > Unfortunately I did see a kernel stability issue upon unplugging another USB > device on this kernel, so there is some more work needed before I can > publish this workaround.
Linux xHCI has some severe issues still, but people on the linux-usb list will eventually sort the issues out. Anything you do which is not with Greg's or Sarah's current git is a waste of your time. At an *absolute* minimum, use the current rc. //Peter ------------------------------------------------------------------------------ Flow-based real-time traffic analytics software. Cisco certified tool. Monitor traffic, SLAs, QoS, Medianet, WAAS etc. with NetFlow Analyzer Customize your own dashboards, set traffic alerts and generate reports. Network behavioral analysis & security monitoring. All-in-one tool. http://pubads.g.doubleclick.net/gampad/clk?id=126839071&iu=/4140/ostg.clktrk _______________________________________________ sigrok-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sigrok-devel
