[+CC Adding Robert for visibility] Hi Arnd, Thank you looking at this! Much appreciated. > > > You could attach the kernel config there, too, since it didn't make it > > > to the mailing list (vger may discard them -- see > > > http://vger.kernel.org/majordomo-info.html). > > > > Bjorn and I looked at which commits that went with a recent Pull Request > > from us might be causing this, but we are a little bit at loss, and were > > hoping that you could give us a hand in troubleshooting this. > > For reference, these are the patches in that branch that touch any > interesting files, > as most of the contents are for pci-controller drivers that are not used on > powerpc at all: > > $ git log --no-merges --oneline 512b7931ad05..dda4b381f05d > arch/powerpc/ drivers/of/ drivers/pci/*.[ch] include/linux/ > acd61ffb2f16 PCI: Add ACS quirk for Pericom PI7C9X2G switches > 978fd0056e19 PCI: of: Allow matching of an interrupt-map local to a PCI device > 041284181226 of/irq: Allow matching of an interrupt-map local to an > interrupt controller > 0ab8d0f6ae3f irqdomain: Make of_phandle_args_to_fwspec() generally available > 5ec0a6fcb60e PCI: Do not enable AtomicOps on VFs > 7a41ae80bdcb PCI: pci-bridge-emul: Fix emulation of W1C bits > fd1ae23b495b PCI: Prefer 'unsigned int' over bare 'unsigned' > ff5d3bb6e16d PCI: Remove redundant 'rc' initialization > 3331325c6347 PCI/VPD: Use pci_read_vpd_any() in pci_vpd_size() > e1b0d0bb2032 PCI: Re-enable Downstream Port LTR after reset or hotplug > ac8e3cef588c PCI/sysfs: Explicitly show first MSI IRQ for 'irq' > 88dee3b0efe4 PCI: Remove unused pci_pool wrappers > b5f9c644eb1b PCI: Remove struct pci_dev->driver > 2a4d9408c9e8 PCI: Use to_pci_driver() instead of pci_dev->driver > 4141127c44a9 powerpc/eeh: Use to_pci_driver() instead of pci_dev->driver > f9a6c8ad4922 PCI/ERR: Reduce compile time for CONFIG_PCIEAER=n > 43e85554d4ed xen/pcifront: Use to_pci_driver() instead of pci_dev->driver > 34ab316d7287 xen/pcifront: Drop pcifront_common_process() tests of pcidev, pdrv > 9f37ab0412eb PCI/switchtec: Add check of event support > 5a72431ec318 powerpc/eeh: Use dev_driver_string() instead of struct > pci_dev->driver->name > ae232f0970ea PCI: Drop pci_device_probe() test of !pci_dev->driver > 097d9d414433 PCI: Drop pci_device_remove() test of pci_dev->driver > 8e9028b3790d PCI: Return NULL for to_pci_driver(NULL) > 357df2fc0066 PCI: Use unsigned to match sscanf("%x") in pci_dev_str_match_path() > bf2928c7a284 PCI/VPD: Add pci_read/write_vpd_any() > b2105b9f39b5 PCI: Correct misspelled and remove duplicated words > 7c3855c423b1 PCI: Coalesce host bridge contiguous apertures > e0f7b1922358 PCI: Use kstrtobool() directly, sans strtobool() wrapper > 36f354ec7bf9 PCI/sysfs: Return -EINVAL consistently from "store" functions > 95e83e219d68 PCI/sysfs: Check CAP_SYS_ADMIN before parsing user input > af9d82626c8f PCI/ACPI: Remove OSC_PCI_SUPPORT_MASKS and OSC_PCI_CONTROL_MASKS > 9a0a1417d3bb PCI: Tidy comments > 06dc660e6eb8 PCI: Rename pcibios_add_device() to pcibios_device_add() > e3f4bd3462f6 PCI: Mark Atheros QCA6174 to avoid bus reset > 3a19407913e8 PCI/P2PDMA: Apply bus offset correctly in DMA address calculation > > Out of these, I agree that most of them seem harmless, these would > be the ones I'd try to look at more closely, or maybe revert for testing: > > 978fd0056e19 PCI: of: Allow matching of an interrupt-map local to a PCI device > 041284181226 of/irq: Allow matching of an interrupt-map local to an > interrupt controller > e1b0d0bb2032 PCI: Re-enable Downstream Port LTR after reset or hotplug > 7c3855c423b1 PCI: Coalesce host bridge contiguous apertures > 3a19407913e8 PCI/P2PDMA: Apply bus offset correctly in DMA address calculation Robert would you be able build a kernel without the patches Arnd singled out as potential curlprits? Might be expidite some troubleshooting saving a lot of time doing bisect. I wonder if this will help you with the following problem: https://lore.kernel.org/linux-pci/CAP145pjO9zdGgutHP=of0H+L1=nSz097zf73i7ZYm2-NWuwHhQ@xxxxxxxxxxxxxx/ Krzysztof
