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Commit 065909b9 authored by Russell King's avatar Russell King Committed by Russell King
Browse files

[ARM] Refine selection of ISA_DMA_API and generic dma.c code 



ISA_DMA_API tells the rest of the kernel if the ISA DMA API is
available.  Select this symbol only on machine types which make
use of the ISA DMA API.

Make building of arch/arm/kernel/dma.c depend on this symbol -
if a machine does not support the ISA DMA API, it's pointless
building this file.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent d4c6fc99

arch/arm/Kconfig

+5 −1
Original line number Diff line number Diff line
@@ -154,6 +154,7 @@ config ARCH_RPC 
	select FIQ

	select TIMER_ACORN

	select ARCH_MAY_HAVE_PC_FDC

	select ISA_DMA_API

	help

	  On the Acorn Risc-PC, Linux can support the internal IDE disk and

	  CD-ROM interface, serial and parallel port, and the floppy drive.
@@ -206,6 +207,7 @@ config ARCH_IMX 


config ARCH_H720X

	bool "Hynix-HMS720x-based"

	select ISA_DMA_API

	help

	  This enables support for systems based on the Hynix HMS720x
@@ -290,12 +292,14 @@ config ISA 
	  (MCA) or VESA.  ISA is an older system, now being displaced by PCI;

	  newer boards don't support it.  If you have ISA, say Y, otherwise N.



# Select ISA DMA controller support

config ISA_DMA

	bool

	select ISA_DMA_API



# Select ISA DMA interface

config ISA_DMA_API

	bool

	default y



config PCI

	bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB

arch/arm/kernel/Makefile

+2 −1
Original line number Diff line number Diff line
@@ -6,11 +6,12 @@ AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET) 


# Object file lists.



obj-y		:= compat.o dma.o entry-armv.o entry-common.o irq.o \

obj-y		:= compat.o entry-armv.o entry-common.o irq.o \

		   process.o ptrace.o semaphore.o setup.o signal.o sys_arm.o \

		   time.o traps.o



obj-$(CONFIG_APM)		+= apm.o

obj-$(CONFIG_ISA_DMA_API)	+= dma.o

obj-$(CONFIG_ARCH_ACORN)	+= ecard.o 

obj-$(CONFIG_FOOTBRIDGE)	+= isa.o

obj-$(CONFIG_FIQ)		+= fiq.o