On Tuesday, November 8, 2016 11:47:09 AM CET zhichang.yuan wrote: > + /* > + * The first PCIBIOS_MIN_IO is reserved specifically for indirectIO. > + * It will separate indirectIO range from pci host bridge to > + * avoid the possible PIO conflict. > + * Set the indirectIO range directly here. > + */ > + lpcdev->io_ops.start = 0; > + lpcdev->io_ops.end = PCIBIOS_MIN_IO - 1; > + lpcdev->io_ops.devpara = lpcdev; > + lpcdev->io_ops.pfin = hisilpc_comm_in; > + lpcdev->io_ops.pfout = hisilpc_comm_out; > + lpcdev->io_ops.pfins = hisilpc_comm_ins; > + lpcdev->io_ops.pfouts = hisilpc_comm_outs; I have to look at patch 2 in more detail again, after missing a few review rounds. I'm still a bit skeptical about hardcoding a logical I/O port range here, and would hope that we can just go through the same assignment of logical port ranges that we have for PCI buses, decoupling the bus addresses from the linux-internal ones. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html