On Mon, Sep 13, 2010 at 01:32:25PM +0000, vasos wrote: > Hello, > > i wish to report a strange issue that my machine experiences with > the NEC USB 3.0 PCI-Express (small slot) controller and the xhci > kernel driver. Do you mean you have an express card, or a PCIe card? I'm not sure what you mean by "small slot". A 1x card vs. a 4x card, perhaps? > Now the machine is running > > Linux xxxx 2.6.35.4 #2 SMP Wed Sep 1 10:15:04 UTC 2010 x86_64 GNU/Linux > > Note that this issue was present in 2.6.34 and 2.6.33 but i though > that it might get fixed. > > > > The issue > ---------------- > The controller is sometimes dected and some not. I mean at some > boots it is present as a PCI device (listed in pci -v as > 05:00.0 USB Controller: NEC Corporation Device 0194 (rev 03) (prog-if 30) > Flags: bus master, fast devsel, latency 0, IRQ 16 > Memory at febfe000 (64-bit, non-prefetchable) [size=8K] > Capabilities: [50] Power Management version 3 > Capabilities: [70] MSI: Enable- Count=1/8 Maskable- 64bit+ > Capabilities: [90] MSI-X: Enable- Count=8 Masked- > Capabilities: [a0] Express Endpoint, MSI 00 > Capabilities: [100] Advanced Error Reporting > Capabilities: [140] Device Serial Number ff-ff-ff-ff-ff-ff-ff-ff > Capabilities: [150] #18 > Kernel driver in use: xhci_hcd > ) > > and some other times it just does not exist. > Maybe it is PCI express related or xhci. I include 2 full dmesg logs > ziped due to the size as well a unified diff of them. If the card is not getting detected by the PCI subsystem, then there's really nothing the xHCI driver can do about it. I asked Jesse Barnes about a similarly flakey xHCI Express Card I have, but he didn't have any suggestions to fix 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
