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	Thu, 26 Jul 2012 07:20:38 -0400
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Hideki EIRAKU <hdk@igel.co.jp>
Cc: Russell King <linux@arm.linux.org.uk>,
	Pawel Osciak <pawel@osciak.com>,
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	alsa-devel@alsa-project.org, Katsuya MATSUBARA <matsu@igel.co.jp>
Subject: Re: [PATCH v2 4/4] fbdev: sh_mobile_lcdc: use dma_mmap_coherent if available
Date: Thu, 26 Jul 2012 13:20:44 +0200
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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@igel.co.jp>

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

-- 
Regards,

Laurent Pinchart