linux-kernel - Re: remove NULL struct device support in the DMA API

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Message-ID: <20190403153552.GA26129@lst.de>
Date:   Wed, 3 Apr 2019 17:35:52 +0200
From:   Christoph Hellwig <hch@....de>
To:     Russell King <linux@...linux.org.uk>, x86@...nel.org,
        Sudip Mukherjee <sudipm.mukherjee@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     linux-fbdev@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: remove NULL struct device support in the DMA API

Any comments on the remaining patches?  I'd like to give this series
a couple weeks of soaking in linux-next before the end of the merge
window, so reviews would be apprciated.

On Thu, Mar 21, 2019 at 03:52:28PM -0700, Christoph Hellwig wrote:
> We still have a few drivers which pass a NULL struct device pointer
> to DMA API functions, which generally is a bad idea as the API
> implementations rely on the device not only for ops selection, but
> also the dma mask and various other attributes, and many implementations
> have been broken for NULL device support for a while.
> 
> This series removes the few remaning users that weren't picked up in
> the last merge window and then removes core support for this "feature".
> 
> A git tree is also available at:
> 
>     git://git.infradead.org/users/hch/misc.git dma-remove-NULL-dev-support
> 
> Gitweb:
> 
>     http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-remove-NULL-dev-support
> _______________________________________________
> iommu mailing list
> iommu@...ts.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/iommu
---end quoted text---

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