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authorChristoph Hellwig <hch@lst.de>2018-08-19 14:53:20 +0200
committerChristoph Hellwig <hch@lst.de>2018-09-20 09:01:15 +0200
commitf3ecc0ff0457eae93503792c6fc35921fa8a6204 (patch)
treecbaa1fbb29ea8d5b33fb8d1798e595147cb72729 /kernel/dma
parent5748e1b35ba28368515d850e8087929a3a65e055 (diff)
downloadlinux-f3ecc0ff0457eae93503792c6fc35921fa8a6204.tar.bz2
dma-mapping: move the dma_coherent flag to struct device
Various architectures support both coherent and non-coherent dma on a per-device basis. Move the dma_noncoherent flag from the mips archdata field to struct device proper to prepare the infrastructure for reuse on other architectures. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Paul Burton <paul.burton@mips.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/dma')
-rw-r--r--kernel/dma/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 1b1d63b3634b..79476749f196 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -13,6 +13,9 @@ config NEED_DMA_MAP_STATE
config ARCH_DMA_ADDR_T_64BIT
def_bool 64BIT || PHYS_ADDR_T_64BIT
+config ARCH_HAS_DMA_COHERENCE_H
+ bool
+
config HAVE_GENERIC_DMA_COHERENT
bool