Re: [PATCH v2 4/4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: 2012-07-26 11:20:39
Also in:
alsa-devel, linux-arm-kernel, linux-media, lkml
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 <redacted>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> -- Regards, Laurent Pinchart