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Commit 9c402f4e authored by Dan Williams's avatar Dan Williams
Browse files

dmaengine: remove arch dependency from DMADEVICES 



The dependency is redundant since all drivers set their specific arch
dependencies.  The NET_DMA option is modified to be enabled only on platforms
where it is known to have a positive effect.  HAS_DMA is added as an explicit
dependency for the DMADEVICES menu.

Acked-by: default avatarAdrian Bunk <bunk@kernel.org>
Acked-by: default avatarHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent 1099dc79

drivers/dma/Kconfig

+8 −5
Original line number Diff line number Diff line
@@ -4,13 +4,14 @@ 


menuconfig DMADEVICES

	bool "DMA Engine support"

	depends on (PCI && X86) || ARCH_IOP32X || ARCH_IOP33X || ARCH_IOP13XX || PPC

	depends on !HIGHMEM64G

	depends on !HIGHMEM64G && HAS_DMA

	help

	  DMA engines can do asynchronous data transfers without

	  involving the host CPU.  Currently, this framework can be

	  used to offload memory copies in the network stack and

	  RAID operations in the MD driver.

	  RAID operations in the MD driver.  This menu only presents

	  DMA Device drivers supported by the configured arch, it may

	  be empty in some cases.



if DMADEVICES
@@ -55,10 +56,12 @@ comment "DMA Clients" 
config NET_DMA

	bool "Network: TCP receive copy offload"

	depends on DMA_ENGINE && NET

	default (INTEL_IOATDMA || FSL_DMA)

	help

	  This enables the use of DMA engines in the network stack to

	  offload receive copy-to-user operations, freeing CPU cycles.

	  Since this is the main user of the DMA engine, it should be enabled;

	  say Y here.



	  Say Y here if you enabled INTEL_IOATDMA or FSL_DMA, otherwise

	  say N.



endif