Hi Jiang, On 2015年05月14日 16:56, Jiang Liu wrote:
Introduce common interface acpi_pci_root_create() and related data structures to create PCI root bus for ACPI PCI host bridges. It will be used to kill duplicated arch specific code for IA64 and x86. It may also help ARM64 in future.
As I commented in previous version, this patch will introduce compile error on ACPI enabled ARM64 kernel because struct pci_controller is not defined for ARM64, so how about adding the following patch before this patch, or squash to this one, does it make sense? From 11d0e98154e681e75936698208398cb4dcd73632 Mon Sep 17 00:00:00 2001 From: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Date: Mon, 18 May 2015 19:41:56 +0800 Subject: [PATCH] ARM64 / PCI: introduce struct pci_controller for ACPI ARM64 ACPI based PCI host bridge init needs a arch dependent struct pci_controller to accommodate common PCI host bridge code which is introduced later, or it will lead to compile errors on ARM64. Signed-off-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> CC: Liviu Dudau <Liviu.Dudau@xxxxxxx> CC: Will Deacon <will.deacon@xxxxxxx> CC: Catalin Marinas <catalin.marinas@xxxxxxx> CC: Lorenzo Pieralisi <Lorenzo.Pieralisi@xxxxxxx> CC: Arnd Bergmann <arnd@xxxxxxxx> --- arch/arm64/include/asm/pci.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/include/asm/pci.h b/arch/arm64/include/asm/pci.h index b008a72..7088495 100644 --- a/arch/arm64/include/asm/pci.h +++ b/arch/arm64/include/asm/pci.h @@ -10,6 +10,16 @@ #include <asm-generic/pci-bridge.h> #include <asm-generic/pci-dma-compat.h> +struct acpi_device; + +struct pci_controller { +#ifdef CONFIG_ACPI + struct acpi_device *companion; /* ACPI companion device */ +#endif + int segment; /* PCI domain */ + int node; /* NUMA node */ +}; + #define PCIBIOS_MIN_IO 0x1000 #define PCIBIOS_MIN_MEM 0 Thanks Hanjun -- 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