[alsa-devel] [PATCH v2 4/4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available

Laurent Pinchart laurent.pinchart at ideasonboard.com
Thu Jul 26 13:20:44 CEST 2012

Hi Eiraku-san,

On Thursday 26 July 2012 20:13:11 Hideki EIRAKU wrote:
> fb_mmap() implemented in fbmem.c uses smem_start as the physical
> address of the frame buffer.  In the sh_mobile_lcdc driver, the
> smem_start is a dma_addr_t that is not a physical address when IOMMU is
> enabled.  dma_mmap_coherent() maps the address correctly.  It is
> available on ARM platforms.
> Signed-off-by: Hideki EIRAKU <hdk at igel.co.jp>

Acked-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>


Laurent Pinchart

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