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Date:   Wed, 22 Jun 2022 15:42:08 +0200
From:   Joerg Roedel <joro@8bytes.org>
To:     Robin Murphy <robin.murphy@arm.com>
Cc:     yf.wang@mediatek.com, Miles Chen <miles.chen@mediatek.com>,
        wsd_upstream@mediatek.com,
        open list <linux-kernel@vger.kernel.org>,
        Libo Kang <Libo.Kang@mediatek.com>,
        "open list:IOMMU DRIVERS" <iommu@lists.linux-foundation.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@lists.infradead.org>,
        Ning Li <ning.li@mediatek.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Will Deacon <will@kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] iommu/dma: Fix race condition during iova_domain
 initialization
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References: <20220530120748.31733-1-yf.wang@mediatek.com>
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 <a0f0d3da-6992-7033-5262-156ffa5316e7@arm.com>
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On Wed, Jun 22, 2022 at 02:27:57PM +0100, Robin Murphy wrote:
> Apologies, I did spot this before, I've just been tied up with other things
> and dropping everything non-critical on the floor, so didn't get round to
> replying before it slipped my mind again.
> 
> In summary, I hate it, but mostly because the whole situation of calling
> iommu_probe_device off the back of driver probe is fundamentally broken. I'm
> still a few steps away from fixing that properly, at which point I can just
> as well rip all these little bodges out again. If it really does need
> mitigating in the meantime (i.e. this is real-world async probe, not just
> some contrived testcase), then I can't easily think of any cleaner hack, so,
> 
> Acked-by: Robin Murphy <robin.murphy@arm.com>

Alright, applied this now.