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From:   Sam Protsenko <semen.protsenko@linaro.org>
Date:   Thu, 3 Nov 2022 14:03:08 +0100
Message-ID: <CAPLW+4nrns9BovWCTOsi3F7=2FWLi2sK0+Cid4Cva2Vs2ZWdqQ@mail.gmail.com>
Subject: Re: [PATCH 3/4] iommu/exynos: Modularize the driver
To:     Marek Szyprowski <m.szyprowski@samsung.com>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
        Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>,
        Sumit Semwal <sumit.semwal@linaro.org>,
        Alim Akhtar <alim.akhtar@samsung.com>,
        Janghyuck Kim <janghyuck.kim@samsung.com>,
        Cho KyongHo <pullip.cho@samsung.com>,
        Daniel Mentz <danielmentz@google.com>,
        David Virag <virag.david003@gmail.com>, iommu@lists.linux.dev,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-samsung-soc@vger.kernel.org
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Hi Marek,

[snip]

> MODULE_DEVICE_TABLE(of, sysmmu_of_match); is missing, so the driver
> won't be automatically loaded, what breaks its operation if compiled as
> module.
>

Right, didn't think about hot-plug case. Will add
MODULE_DEVICE_TABLE() along with MODULE_ALIAS() in v2, thanks.

> Also Exynos DRM and S5P-MFC drivers rely on the Exynos IOMMU being
> built-in, so they need to be adjusted for modularized builds too imho,
> at least in the Kconfig dependency.
>

Sure, I'll check all Kconfigs and defconfigs before sending out v2.

Btw, can you please also check my most recent reply [1] for the
"[PATCH 1/2] iommu/exynos: Abstract getting the fault info"?

[1] https://lore.kernel.org/lkml/CAPLW+4n-Lf6je61rxdJ9nJnX9h9F8F-y+qikG7eFF0avQpMV9Q@mail.gmail.com/

Thanks!

[snip]