Commit cd57d07b authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Rich Felker
Browse files

sh: don't allow non-coherent DMA for NOMMU 



The code handling non-coherent DMA depends on being able to remap code
as non-cached.  But that can't be done without an MMU, so using this
option on NOMMU builds is broken.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarRich Felker <dalias@libc.org>
parent 846f9e1f

arch/sh/Kconfig

+2 −1
Original line number Diff line number Diff line
@@ -61,6 +61,7 @@ config SUPERH 
	select MAY_HAVE_SPARSE_IRQ

	select MODULES_USE_ELF_RELA

	select NEED_SG_DMA_LENGTH

	select NO_DMA if !MMU && !DMA_COHERENT

	select NO_GENERIC_PCI_IOPORT_MAP if PCI

	select OLD_SIGACTION

	select OLD_SIGSUSPEND
@@ -135,7 +136,7 @@ config DMA_COHERENT 
	bool



config DMA_NONCOHERENT

	def_bool !DMA_COHERENT

	def_bool !NO_DMA && !DMA_COHERENT

	select ARCH_HAS_SYNC_DMA_FOR_DEVICE



config PGTABLE_LEVELS

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