dma_debug_add_bus 1705 arch/powerpc/platforms/pseries/vio.c 	dma_debug_add_bus(&vio_bus_type);
dma_debug_add_bus 1713 drivers/pci/pci-driver.c 	dma_debug_add_bus(&pci_bus_type);
dma_debug_add_bus   19 include/linux/dma-debug.h extern void dma_debug_add_bus(struct bus_type *bus);