On Tue, Apr 17, 2012 at 10:07 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > On Tue, Apr 17, 2012 at 2:34 AM, Martin Mokrejs > <mmokrejs@xxxxxxxxxxxxxxxxxx> wrote: >> Yinghai Lu wrote: >>> On Tue, Apr 17, 2012 at 1:46 AM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: >>>> On Tue, Apr 17, 2012 at 12:27 AM, Martin Mokrejs >>>> <mmokrejs@xxxxxxxxxxxxxxxxxx> wrote: >>>>>> >>>>>> can you send out lspci -vvxxxx -s 00:1c.7 after removing USB 3.0 express card? >>>>> >>>>> No, that did not help (tried on 3.4-rc3). First I plugged in the NEC uPD720200 USB3.0 card >>>>> and unplugged it (card removal not reported :(), saved the lspci output. >>>>> Then I inserted the FireWire card, unplugged, again saved the lspci output. >>>>> Finally, saved the dmesg. All three files are attached. >>>> >>>> for USB 3.0: >>>> SltSta: Status: AttnBtn- PowerFlt- MRL- CmdCplt- PresDet+ Interlock- >>>> Changed: MRL- PresDet- LinkState+ >>> >>> LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive+ >>> BWMgmt+ ABWMgmt- >>> >>> link still active even that card get removed, that looks like chipset >>> have problem. >> >> Yinghai, >> so what should I ask Dell for? To fix BIOS of the laptop? What exactly? Or do you think >> this is a hardware issue with the chipset? > > after the expresscard get removed, that root port socket status bits > still report Data Link Active, and > the card still present. > > Better check with Dell at first, and ask them to talk with intel if > there is silicon bug with that chipset that report wrong status. > > Let me check if i could rebase one my local patch do reset pcie link > to prove that problem it silicon related. Rebase patches about pcie link disable/enable in /sys. please check them at git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git for-pci-test PCI, sysfs: merge dev and bus cpuaffinity show handling PCI, sys: Use is_visable() with boot_vga attribute for pci_dev PCI, sysfs: Put resource_alignment info pci_bus_attrs array PCI: Move pcie_link_disable to pcie-link.c PCI, sysfs: Add pcie attrs for pcie device under pci dev dir. PCI: Add link_disable in /sysfs for pcie device it is based on for-pci-root-bus-hotplug branch Or you can just master branch like git clone git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git After you remove USB3 expresscard, you need to echo 1 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable then echo 0 > /sys/devices/pci0000\:00/0000\:00\:1c.7/pcie_link_disable Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
