[PATCH 0/3] Use dma_mmap_coherent to support IOMMU mapper
Hideki EIRAKU
hdk at igel.co.jp
Wed Jul 25 02:29:21 EDT 2012
There is a dma_mmap_coherent() API in some architectures. This API
provides a mmap function for memory allocated by dma_alloc_coherent().
Some drivers mmap a dma_addr_t returned by dma_alloc_coherent() as a
physical address. But such drivers do not work correctly when IOMMU
mapper is used.
Hideki EIRAKU (3):
ARM: dma-mapping: define ARCH_HAS_DMA_MMAP_COHERENT
media: videobuf2-dma-contig: use dma_mmap_coherent if available
fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available
arch/arm/include/asm/dma-mapping.h | 1 +
drivers/media/video/videobuf2-dma-contig.c | 18 ++++++++++++++++++
drivers/video/sh_mobile_lcdcfb.c | 14 ++++++++++++++
3 files changed, 33 insertions(+), 0 deletions(-)
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