Commit 2ee7a4ef authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

MIPS: only select ARCH_HAS_UNCACHED_SEGMENT for non-coherent platforms 



While mips might architecturally have the uncached segment all the time,
the infrastructure to use it is only need on platforms where DMA is
at least partially incoherent.  Only select it for those configuration
to fix a build failure as the arch_dma_prep_coherent symbol is also only
provided for non-coherent platforms.

Fixes: 2e96e04d ("MIPS: use the generic uncached segment support in dma-direct")
Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarPaul Burton <paul.burton@mips.com>
Tested-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent ff2437be

arch/mips/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -8,7 +8,6 @@ config MIPS 
	select ARCH_HAS_ELF_RANDOMIZE

	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST

	select ARCH_HAS_UBSAN_SANITIZE_ALL

	select ARCH_HAS_UNCACHED_SEGMENT

	select ARCH_SUPPORTS_UPROBES

	select ARCH_USE_BUILTIN_BSWAP

	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
@@ -1120,6 +1119,7 @@ config DMA_NONCOHERENT 
	bool

	select ARCH_HAS_DMA_MMAP_PGPROT

	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

	select ARCH_HAS_UNCACHED_SEGMENT

	select NEED_DMA_MAP_STATE

	select ARCH_HAS_DMA_COHERENT_TO_PFN

	select DMA_NONCOHERENT_CACHE_SYNC

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