On 01/04/2013 09:08 AM, Daniel J Blueman wrote: > On 3 January 2013 23:41, Jiang Liu <liuj97@xxxxxxxxx> wrote: >> On 01/03/2013 11:11 PM, Daniel J Blueman wrote: >>> When the Apple thunderbolt ethernet adapter comes loose on my Macbook >>> Pro Retina (Intel DSL3510), we see pci_slot_name return >>> non-deterministic data (ie varying each boot), and we see pciehp_wp >>> remain armed with events causing the kthread to get stuck: >>> >>> tg3 0000:0a:00.0 eth0: Link is up at 1000 Mbps, full duplex >>> tg3 0000:0a:00.0 eth0: Flow control is on for TX and on for RX >>> <thunderbold adapter comes loose> >>> pciehp 0000:06:03.0:pcie24: Card not present on Slot(3) >>> tg3 0000:0a:00.0: tg3_abort_hw timed out, TX_MODE_ENABLE will not >>> clear MAC_TX_MODE=ffffffff >>> tg3 0000:0a:00.0 eth0: No firmware running >>> tg3 0000:0a:00.0 eth0: Link is down >>> pcieport 0000:00:01.1: System wakeup enabled by ACPI >>> pciehp 0000:09:00.0:pcie24: unloading service driver pciehp >>> pciehp 0000:09:00.0:pcie24: Latch open on >>> Slot(\xfffffff89\xffffffbbe\x02\xffffff88\xffffffff\xffffffff\xffffffe09\xffffffbbe\x02\xffffff88\xffffffff\xfffffffffbcon) >>> pciehp 0000:09:00.0:pcie24: Button pressed on >>> Slot(\xfffffff89\xffffffbbe\x02\xffffff88\xffffffff\xffffffff\xffffffe09\xffffffbbe\x02\xffffff88\xffffffff\xfffffffffbcon) >>> pciehp 0000:09:00.0:pcie24: Card present on >>> Slot(\xfffffff89\xffffffbbe\x02\xffffff88\xffffffff\xffffffff\xffffffe09\xffffffbbe\x02\xffffff88\xffffffff\xfffffffffbcon) >>> pciehp 0000:09:00.0:pcie24: Power fault on slot >>> \xfffffff89\xffffffbbe\x02\xffffff88\xffffffff\xffffffff\xffffffe09\xffffffbbe\x02\xffffff88\xffffffff\xfffffffffbcon >>> pciehp 0000:09:00.0:pcie24: Power fault bit 0 set >>> pciehp 0000:09:00.0:pcie24: PCI slot >>> #\xfffffff89\xffffffbbe\x02\xffffff88\xffffffff\xffffffff\xffffffe09\xffffffbbe\x02\xffffff88\xffffffff\xfffffffffbcon >>> - powering on due to button press. >>> pciehp 0000:09:00.0:pcie24: Link Training Error occurs >>> pciehp 0000:09:00.0:pcie24: Failed to check link status >>> INFO: task kworker/0:1:52 blocked for more than 120 seconds. > [...] > >> Hi Daniel, >> It seems like an issue caused by recursive PCIe HPC. >> Could you please help to try the patch from: >> http://www.spinics.net/lists/linux-pci/msg18625.html >> Thanks! >> Gerry > > (adding Yijing) > > Splendid; this fixes this failure nicely [1], finally releasing the bus. > > If nothing else, I feel this should be queud for 3.8-rc3. > > Many thanks, > Daniel > > --- [1] > > <thunderbolt ethernet adapter disengagement> > pciehp 0000:06:03.0:pcie24: Card not present on Slot(3) > tg3 0000:0a:00.0: tg3_abort_hw timed out, TX_MODE_ENABLE will not > clear MAC_TX_MODE=ffffffff > tg3 0000:0a:00.0 eth0: No firmware running > tg3 0000:0a:00.0 eth0: Link is down > [sched_delayed] sched: RT throttling activated > pcieport 0000:00:01.1: System wakeup enabled by ACPI > pciehp 0000:09:00.0:pcie24: unloading service driver pciehp > pciehp 0000:09:00.0:pcie24: Latch open on > Slot(\xffffffb0\x04Pd\x02\xffffff88\xffffffff\xffffffff\xffffff98\x04Pd\x02\xffffff88\xffffffff\xfffffffffbcon) > pciehp 0000:09:00.0:pcie24: Button pressed on > Slot(\xffffffb0\x04Pd\x02\xffffff88\xffffffff\xffffffff\xffffff98\x04Pd\x02\xffffff88\xffffffff\xfffffffffbcon) > pciehp 0000:09:00.0:pcie24: Card present on > Slot(\xffffffb0\x04Pd\x02\xffffff88\xffffffff\xffffffff\xffffff98\x04Pd\x02\xffffff88\xffffffff\xfffffffffbcon) > pciehp 0000:09:00.0:pcie24: Power fault on slot > \xffffffb0\x04Pd\x02\xffffff88\xffffffff\xffffffff\xffffff98\x04Pd\x02\xffffff88\xffffffff\xfffffffffbcon Hi Daniel, I have worked on a patch which may solve the random output above, but need to rebase it to the latest kernel. Will send the patch to you once rebased. Thanks! Gerry > pciehp 0000:09:00.0:pcie24: Power fault bit 0 set > pciehp 0000:09:00.0:pcie24: PCI slot > #\xffffffb0\x04Pd\x02\xffffff88\xffffffff\xffffffff\xffffff98\x04Pd\x02\xffffff88\xffffffff\xfffffffffbcon > - powering on due to button press. > pciehp 0000:09:00.0:pcie24: Link Training Error occurs > pciehp 0000:09:00.0:pcie24: Failed to check link status > pci_bus 0000:0a: busn_res: [bus 0a] is released > pci_bus 0000:09: busn_res: [bus 09-0a] is released > -- 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
