[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>
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@ -154,6 +154,7 @@ config ARCH_RPC
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select FIQ
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select TIMER_ACORN
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select ARCH_MAY_HAVE_PC_FDC
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select ISA_DMA_API
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help
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On the Acorn Risc-PC, Linux can support the internal IDE disk and
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CD-ROM interface, serial and parallel port, and the floppy drive.
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@ -206,6 +207,7 @@ config ARCH_IMX
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config ARCH_H720X
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bool "Hynix-HMS720x-based"
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select ISA_DMA_API
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help
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This enables support for systems based on the Hynix HMS720x
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@ -290,12 +292,14 @@ config ISA
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(MCA) or VESA. ISA is an older system, now being displaced by PCI;
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newer boards don't support it. If you have ISA, say Y, otherwise N.
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# Select ISA DMA controller support
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config ISA_DMA
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bool
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select ISA_DMA_API
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# Select ISA DMA interface
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config ISA_DMA_API
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bool
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default y
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config PCI
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bool "PCI support" if ARCH_INTEGRATOR_AP || ARCH_VERSATILE_PB
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@ -6,11 +6,12 @@ AFLAGS_head.o := -DTEXT_OFFSET=$(TEXT_OFFSET)
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# Object file lists.
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obj-y := compat.o dma.o entry-armv.o entry-common.o irq.o \
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obj-y := compat.o entry-armv.o entry-common.o irq.o \
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process.o ptrace.o semaphore.o setup.o signal.o sys_arm.o \
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time.o traps.o
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obj-$(CONFIG_APM) += apm.o
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obj-$(CONFIG_ISA_DMA_API) += dma.o
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obj-$(CONFIG_ARCH_ACORN) += ecard.o
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obj-$(CONFIG_FOOTBRIDGE) += isa.o
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obj-$(CONFIG_FIQ) += fiq.o
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