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SubjectRe: [PATCH] mei: switch from 'pci_' to 'dma_' API
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Le 24/08/2021 à 15:43, Greg KH a écrit :
> On Sun, Aug 22, 2021 at 10:02:59PM +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 compile tested.
>>
>>
>> @@
>> @@
>> - PCI_DMA_BIDIRECTIONAL
>> + DMA_BIDIRECTIONAL
>>
>> @@
>> @@
>> - PCI_DMA_TODEVICE
>> + DMA_TO_DEVICE
>>
>> @@
>> @@
>> - PCI_DMA_FROMDEVICE
>> + DMA_FROM_DEVICE
>>
>> @@
>> @@
>> - PCI_DMA_NONE
>> + DMA_NONE
>>
>> @@
>> expression e1, e2, e3;
>> @@
>> - pci_alloc_consistent(e1, e2, e3)
>> + dma_alloc_coherent(&e1->dev, e2, e3, GFP_)
>>
>> @@
>> expression e1, e2, e3;
>> @@
>> - pci_zalloc_consistent(e1, e2, e3)
>> + dma_alloc_coherent(&e1->dev, e2, e3, GFP_)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_free_consistent(e1, e2, e3, e4)
>> + dma_free_coherent(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_map_single(e1, e2, e3, e4)
>> + dma_map_single(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_unmap_single(e1, e2, e3, e4)
>> + dma_unmap_single(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4, e5;
>> @@
>> - pci_map_page(e1, e2, e3, e4, e5)
>> + dma_map_page(&e1->dev, e2, e3, e4, e5)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_unmap_page(e1, e2, e3, e4)
>> + dma_unmap_page(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_map_sg(e1, e2, e3, e4)
>> + dma_map_sg(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_unmap_sg(e1, e2, e3, e4)
>> + dma_unmap_sg(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
>> + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_dma_sync_single_for_device(e1, e2, e3, e4)
>> + dma_sync_single_for_device(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
>> + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2, e3, e4;
>> @@
>> - pci_dma_sync_sg_for_device(e1, e2, e3, e4)
>> + dma_sync_sg_for_device(&e1->dev, e2, e3, e4)
>>
>> @@
>> expression e1, e2;
>> @@
>> - pci_dma_mapping_error(e1, e2)
>> + dma_mapping_error(&e1->dev, e2)
>>
>> @@
>> expression e1, e2;
>> @@
>> - pci_set_dma_mask(e1, e2)
>> + dma_set_mask(&e1->dev, e2)
>>
>> @@
>> expression e1, e2;
>> @@
>> - pci_set_consistent_dma_mask(e1, e2)
>> + dma_set_coherent_mask(&e1->dev, e2)
>>
>> Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
>
> That is a lot of different things in one changelog text, yet you really
> only did a replacement for pci_set_dma_mask here. Please clean up the
> changelog to reflect what you did, and most importantly, _WHY_ you are
> doing it.
>
> thanks,
>
> greg k-h
>

Hi,

thx for the feed-back.

I've continued my serie and just sent "[PATCH] niu: switch from 'pci_'
to 'dma_' API" where you are also in copy.

I've tried to improve the log message in it, giving references of why
these clean-ups are done (proposed by Christoph Hellwig) and some
reasons of why it is a good idea (argumentation from Julia Lawall)

The long coccinelle script has been reduced to only relevant parts.

I hope that this new version is good enough.


Comments on the "niu" drivers will also be taken into account when I
will send a v2 for patches you have commented on.

CJ

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