On Sat, Jul 16, 2022 at 06:24:50PM -0400, Jim Quinlan wrote: > Our PCIe RC HW has an atypical behavior: if it does not have PCIe link > established between itself and downstream, any subsequent config space > access causes a CPU abort. This commit sets a "refusal mode" if the PCIe > link-up fails, and this has our pci_ops map_bus function returning a NULL > address, which in turn precludes the access from happening. > @@ -687,6 +688,19 @@ static void __iomem *brcm_pcie_map_conf(struct pci_bus *bus, unsigned int devfn, Oh, and I forgot to mention that brcmstb is one of the few drivers that doesn't name these functions ".*_map_bus()". It's helpful when they all match a simple grep pattern. Maybe a patch at the end could fix this.
