direct access is needed in mmconf mode too. There are two reasons: 1. we need it to access first 256 bytes. We have bug before that using mmconf to access pci config space hangs system (when resizing BARs) 2. when doing mmconfg bar checking, we need access ACPI _CRS, which might access PCI config space. Signed-off-by: Shaohua Li <shaohua.li@xxxxxxxxx> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 880fcb6..90e50d9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1907,7 +1907,7 @@ config PCI_BIOS # x86-64 doesn't support PCI BIOS access from long mode so always go direct. config PCI_DIRECT def_bool y - depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC)) + depends on PCI && (X86_64 || (PCI_GODIRECT || PCI_GOANY || PCI_GOOLPC || PCI_GOMMCONFIG)) config PCI_MMCONFIG def_bool y -- 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
