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-rw-r--r--Documentation/DMA-API-HOWTO.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index 3c4e07123e59..d568bc235bc0 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -738,17 +738,17 @@ to "Closing".
738 CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs 738 CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
739 (including software IOMMU). 739 (including software IOMMU).
740 740
7412) ARCH_KMALLOC_MINALIGN 7412) ARCH_DMA_MINALIGN
742 742
743 Architectures must ensure that kmalloc'ed buffer is 743 Architectures must ensure that kmalloc'ed buffer is
744 DMA-safe. Drivers and subsystems depend on it. If an architecture 744 DMA-safe. Drivers and subsystems depend on it. If an architecture
745 isn't fully DMA-coherent (i.e. hardware doesn't ensure that data in 745 isn't fully DMA-coherent (i.e. hardware doesn't ensure that data in
746 the CPU cache is identical to data in main memory), 746 the CPU cache is identical to data in main memory),
747 ARCH_KMALLOC_MINALIGN must be set so that the memory allocator 747 ARCH_DMA_MINALIGN must be set so that the memory allocator
748 makes sure that kmalloc'ed buffer doesn't share a cache line with 748 makes sure that kmalloc'ed buffer doesn't share a cache line with
749 the others. See arch/arm/include/asm/cache.h as an example. 749 the others. See arch/arm/include/asm/cache.h as an example.
750 750
751 Note that ARCH_KMALLOC_MINALIGN is about DMA memory alignment 751 Note that ARCH_DMA_MINALIGN is about DMA memory alignment
752 constraints. You don't need to worry about the architecture data 752 constraints. You don't need to worry about the architecture data
753 alignment constraints (e.g. the alignment constraints about 64-bit 753 alignment constraints (e.g. the alignment constraints about 64-bit
754 objects). 754 objects).