CONFIG_X86_DEV_DMA_OPS 14 arch/x86/include/asm/device.h #if defined(CONFIG_X86_DEV_DMA_OPS) && defined(CONFIG_PCI_DOMAINS) CONFIG_X86_DEV_DMA_OPS 628 arch/x86/pci/common.c #if defined(CONFIG_X86_DEV_DMA_OPS) && defined(CONFIG_PCI_DOMAINS)