On Tue, Feb 19, 2019 at 07:20:30PM -0600, Alexandru Gagniuc wrote: > --- a/drivers/pci/hotplug/pciehp_hpc.c > +++ b/drivers/pci/hotplug/pciehp_hpc.c > @@ -952,3 +952,23 @@ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_QCOM, 0x0400, > PCI_CLASS_BRIDGE_PCI, 8, quirk_cmd_compl); > DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_QCOM, 0x0401, > PCI_CLASS_BRIDGE_PCI, 8, quirk_cmd_compl); > + > + Duplicate newline. > +static void fixup_dell_nvme_backplane_switches(struct pci_dev *pdev) Can we have a little code comment above the function such as: +/* + * Dell <product name> NVMe storage backplanes disable in-band presence + * (PCIe r5.0 sec X.Y.Z) but neglect to set the corresponding flag in the + * Slot Capabilities 2 register. + */ > + if (pdev->subsystem_vendor != PCI_VENDOR_ID_DELL > + || pdev->subsystem_device != 0x1fc7) This looks a little unpolished, how about: + if (pdev->subsystem_vendor != PCI_VENDOR_ID_DELL || + pdev->subsystem_device != 0x1fc7) > + return; > + > + pdev->no_in_band_presence = 1; > +} > + > +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_PLX, 0x9733, By convention there's no blank line between the closing curly brace and the DECLARE_PCI_FIXUP_CLASS_FINAL(). If the quirk is x86-specific, please enclose it in "#ifdef CONFIG_X86" to reduce kernel footprint on other arches. Thanks, Lukas