linux-kernel - Re: [PATCH v2] of: iommu: make of_iommu_init() postcore_initcall

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Message-ID: <CAL_JsqL23AohbYhbQZyT-PRPKujttTZNNh1qdoQXv8BwyYq+mg@mail.gmail.com>
Date:	Wed, 8 Jun 2016 10:44:31 -0500
From:	Rob Herring <robh+dt@...nel.org>
To:	Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Joerg Roedel <joro@...tes.org>,
	Hanjun Guo <guohanjun@...wei.com>,
	Arnd Bergmann <arnd@...db.de>,
	Catalin Marinas <catalin.marinas@....com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Rich Felker <dalias@...c.org>,
	Robin Murphy <robin.murphy@....com>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2] of: iommu: make of_iommu_init() postcore_initcall_sync

On Wed, Jun 1, 2016 at 1:06 AM, Kefeng Wang <wangkefeng.wang@...wei.com> wrote:
> The of_iommu_init() is called multiple times by arch code,
> make it postcore_initcall_sync, then we can drop relevant
> calls fully.
>
> Note, the IOMMUs should have a chance to perform some basic
> initialisation before we start adding masters to them. So
> postcore_initcall_sync is good choice, it ensures of_iommu_init()
> called before of_platform_populate.

What ever happened to doing deferred probe for IOMMUs?

Rob