linux-kernel - Re: [PATCH] dmaengine: switch from 'pci_' to 'dma

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Message-ID: <YSNOTX68ltbt2hwf@smile.fi.intel.com>
Date:   Mon, 23 Aug 2021 10:29:17 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     gustavo.pimentel@...opsys.com, vkoul@...nel.org,
        vireshk@...nel.org, wangzhou1@...ilicon.com, logang@...tatee.com,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] dmaengine: switch from 'pci_' to 'dma_' API

On Sun, Aug 22, 2021 at 02:40:22PM +0200, Christophe JAILLET wrote:
> The wrappers in include/linux/pci-dma-compat.h should go away.
> 
> The patch has been generated with the coccinelle script below.
> 
> It has been hand modified to use 'dma_set_mask_and_coherent()' instead of
> 'pci_set_dma_mask()/pci_set_consistent_dma_mask()' when applicable.
> This is less verbose.
> 
> It has been compile tested.

> @@
> expression e1, e2;
> @@
> -    pci_set_consistent_dma_mask(e1, e2)
> +    dma_set_coherent_mask(&e1->dev, e2)

Can we, please, replace this long noise in the commit message with a link to a
script in coccinelle data base?

And the same comment for any future submission that are based on the scripts
(esp. coccinelle ones).

...

> This patch is mostly mechanical and compile tested. I hope it is ok to
> update the "drivers/dma/" directory all at once.

There is another discussion with Hellwig [1] about 64-bit DMA mask,
i.e. it doesn't fail anymore, so you need to rework drivers accordingly.

[1]: https://lkml.org/lkml/2021/6/7/398

-- 
With Best Regards,
Andy Shevchenko