linux-kernel - Re: [PATCH v4 2/2] iommu/exynos: Add iommu driver for Exynos Platforms

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Message-ID: <CAHQjnONHt0U6-4VTVOg35q+MBWgBartt-nG8CYYcEb74RPcPTw@mail.gmail.com>
Date:	Wed, 12 Oct 2011 18:18:51 +0900
From:	KyongHo Cho <pullip.cho@...sung.com>
To:	Ohad Ben-Cohen <ohad@...ery.com>
Cc:	Linux ARM Kernel <linux-arm-kernel@...ts.infradead.org>,
	linux-samsung-soc@...r.kernel.org,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	Russell King <rmk+kernel@....linux.org.uk>,
	joerg.roedel@....com, Sanghyun Lee <sanghyun75.lee@...sung.com>,
	younglak1004.kim@...sung.com, Kukjin Kim <kgene.kim@...sung.com>
Subject: Re: [PATCH v4 2/2] iommu/exynos: Add iommu driver for Exynos Platforms

Hi Ohad,

On Wed, Oct 12, 2011 at 5:22 PM, Ohad Ben-Cohen <ohad@...ery.com> wrote:
>> +static int exynos_iommu_unmap(struct iommu_domain *domain, unsigned long
>> iova,
>> +                          int gfp_order)
>> +{
> ...
>> +       return 0;
>> +}
>
> ->unmap() should return the size of the unmapped region (in page order
> atm); this is already expected by mainline users of the IOMMU API
> today, and will also be used by the iommu core itself soon.
>
Ok. Thank you. I missed that.

I will send new patches immediately

KyongHo.
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