linux-kernel - Re: [PATCH v6 4/5] iommu/mediatek: Add mt8173 IOMMU driver

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Message-ID: <1450147239.22854.25.camel@mhfsdcap03>
Date:	Tue, 15 Dec 2015 10:40:39 +0800
From:	Yong Wu <yong.wu@...iatek.com>
To:	Matthias Brugger <matthias.bgg@...il.com>
CC:	Joerg Roedel <joro@...tes.org>,
	Thierry Reding <treding@...dia.com>,
	Mark Rutland <mark.rutland@....com>,
	Robin Murphy <robin.murphy@....com>,
	Will Deacon <will.deacon@....com>,
	Daniel Kurtz <djkurtz@...gle.com>,
	Tomasz Figa <tfiga@...gle.com>,
	Lucas Stach <l.stach@...gutronix.de>,
	"Rob Herring" <robh+dt@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	<linux-mediatek@...ts.infradead.org>,
	Sasha Hauer <kernel@...gutronix.de>,
	<srv_heupstream@...iatek.com>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<iommu@...ts.linux-foundation.org>, <pebolle@...cali.nl>,
	<arnd@...db.de>, <mitchelh@...eaurora.org>,
	<p.zabel@...gutronix.de>, <yingjoe.chen@...iatek.com>
Subject: Re: [PATCH v6 4/5] iommu/mediatek: Add mt8173 IOMMU driver

On Mon, 2015-12-14 at 19:19 +0100, Matthias Brugger wrote:
> 
> On 08/12/15 10:49, Yong Wu wrote:
> > This patch adds support for mediatek m4u (MultiMedia Memory Management
> > Unit).
> >
> > Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> > ---
[...]
> > +static void mtk_iommu_config(struct mtk_iommu_data *data,
> > +			     struct device *dev, bool enable)
> > +{
> > +	struct mtk_iommu_client_priv *head, *cur, *next;
> > +
> > +	head = dev->archdata.iommu;
> > +	list_for_each_entry_safe(cur, next, &head->client, client) {
> > +		mtk_smi_config_port(
> > +			data->larbdev[MTK_M4U_TO_LARB(cur->mtk_m4u_id)],
> > +			MTK_M4U_TO_PORT(cur->mtk_m4u_id), enable);
> 
> Use an extra variable for MTK_M4U_TO_LARB(cur->mtk-m4u_id), this makes 
> the code easier to read.

OK. Thanks.
I will fix it in next version.

> 
> Regards,
> Matthias
> 
> > +	}
> > +}
> > +
[...]


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