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[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: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2006-01-04 15:44:16 +00:00 committed by Russell King
parent d4c6fc9976
commit 065909b915
2 changed files with 7 additions and 2 deletions
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6
arch/arm/Kconfig
View File

@ -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

3
arch/arm/kernel/Makefile
View File

@ -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