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From: Eli Billauer <>
To: Arnd Bergmann <>,
	Christophe JAILLET <>
Cc: gregkh <>,
	Linux Kernel Mailing List <>,,
	Christoph Hellwig <>
Subject: Re: [PATCH v1 0/4] char: xillybus: Remove usage of the deprecated 'pci-dma-compat.h' API
Date: Sun, 29 Aug 2021 11:23:06 +0300	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On 29/08/21 00:26, Arnd Bergmann wrote:
> 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 216bf58f4092 ("Documentation: convert
> PCI-DMA-mapping.txt to use the generic DMA API").
Thanks, Arnd. That's exactly the kind of reference I was asking about.

And of course, a thanks goes to Christophe as well for drawing my 
attention to this issue. A bit surprising it didn't happen back in 2013, 
when the driver was included in the kernel. Or possibly in 2014, when it 
went out of staging.

As for this patch set, three out of four patches make modifications in 
functions that should be deleted altogether. Their only purpose is to 
wrap DMA-related calls made by the core driver, so that the pci_* API is 
used for PCI devices, and the dma_* API otherwise. As it turns out, this 
was a lot of nonsense code from day one.

I'll prepare a patch that removes all this.

Thanks again,

      reply	other threads:[~2021-08-29  8:23 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-27 17:17 [PATCH v1 0/4] char: xillybus: Remove usage of the deprecated 'pci-dma-compat.h' API Christophe JAILLET
2021-08-27 17:17 ` [PATCH v1 1/4] " Christophe JAILLET
2021-11-03 18:38   ` Christophe JAILLET
2021-08-27 17:17 ` [PATCH v1 2/4] char: xillybus: Remove usage of 'pci_unmap_single()' Christophe JAILLET
2021-08-27 17:17 ` [PATCH v1 3/4] char: xillybus: Remove usage of remaining deprecated pci_ API Christophe JAILLET
2021-08-30  9:48   ` Dan Carpenter
2021-08-30 17:19     ` Christophe JAILLET
2021-08-27 17:17 ` [PATCH v1 4/4] char: xillybus: Simplify 'xillybus_init_endpoint()' Christophe JAILLET
2021-08-28 15:05 ` [PATCH v1 0/4] char: xillybus: Remove usage of the deprecated 'pci-dma-compat.h' API Eli Billauer
2021-08-28 21:26   ` Arnd Bergmann
2021-08-29  8:23     ` Eli Billauer [this message]

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