linux-kernel - Re: [PATCH 1/2] iommu: Statically set module owner

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Message-ID: <20210325170853.GA15337@willie-the-truck>
Date:   Thu, 25 Mar 2021 17:08:54 +0000
From:   Will Deacon <will@...nel.org>
To:     Robin Murphy <robin.murphy@....com>
Cc:     joro@...tes.org, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] iommu: Statically set module owner

On Fri, Mar 19, 2021 at 12:52:01PM +0000, Robin Murphy wrote:
> It happens that the 3 drivers which first supported being modular are
> also ones which play games with their pgsize_bitmap, so have non-const
> iommu_ops where dynamically setting the owner manages to work out OK.
> However, it's less than ideal to force that upon all drivers which want
> to be modular - like the new sprd-iommu driver which now has a potential
> bug in that regard - so let's just statically set the module owner and
> let ops remain const wherever possible.
> 
> Signed-off-by: Robin Murphy <robin.murphy@....com>
> ---
> 
> This is something I hadn't got round to sending earlier, so now rebased
> onto iommu/next to accommodate the new driver :)
> 
>  drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 1 +
>  drivers/iommu/arm/arm-smmu/arm-smmu.c       | 1 +
>  drivers/iommu/sprd-iommu.c                  | 1 +
>  drivers/iommu/virtio-iommu.c                | 1 +
>  include/linux/iommu.h                       | 9 +--------
>  5 files changed, 5 insertions(+), 8 deletions(-)

Acked-by: Will Deacon <will@...nel.org>

Will