linux-kernel - Re: [PATCH v2] misc: genwqe: Remove usage of the deprecated "pci-dma-compat.h" API

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Date:   Sat, 18 Sep 2021 11:42:01 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Frank Haverkamp <haver@...ux.ibm.com>,
        Arnd Bergmann <arnd@...db.de>,
        gregkh <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] misc: genwqe: Remove usage of the deprecated
 "pci-dma-compat.h" API

On Sat, Sep 18, 2021 at 7:20 AM Christophe JAILLET
<christophe.jaillet@...adoo.fr> wrote:
>
> In [1], Christoph Hellwig has proposed to remove the wrappers in
> include/linux/pci-dma-compat.h.
>
> Some reasons why this API should be removed have been given by Julia
> Lawall in [2].
>
> Finally, Arnd Bergmann reminded that the documentation was updated 11 years
> ago to only describe the modern linux/dma-mapping.h interfaces and mark the
> old bus-specific ones as no longer recommended, see commit 216bf58f4092
> ("Documentation: convert PCI-DMA-mapping.txt to use the generic DMA API").
...
>
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Reviewed-by: Arnd Bergmann <arnd@...db.de>

How much is left now overall? Are you getting close enough that the
remaining patches to remove the header can be done as a short series and
merged through Andrew's -mm tree?

       Arnd