linux-kernel - Re: [PATCH v2 4/6] iommu/exynos: Implement shutdown driver method

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Message-ID: <39aac9a0-a2cb-af98-8274-93ff0a7da095@linaro.org>
Date:   Fri, 4 Nov 2022 09:47:15 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Sam Protsenko <semen.protsenko@...aro.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Janghyuck Kim <janghyuck.kim@...sung.com>,
        Cho KyongHo <pullip.cho@...sung.com>,
        Daniel Mentz <danielmentz@...gle.com>,
        David Virag <virag.david003@...il.com>, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v2 4/6] iommu/exynos: Implement shutdown driver method

On 03/11/2022 15:51, Sam Protsenko wrote:
> While remove method shouldn't be implemented, as it can't be done
> reliably, the shutdown method can be useful for performing a kexec.
> That was inspired by other IOMMU drivers, see commit 1a4e90f25b2c
> ("iommu/rockchip: Perform a reset on shutdown") for example.
> 
> Signed-off-by: Sam Protsenko <semen.protsenko@...aro.org>


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof