user/sven/linux.git/Documentation/DMA-API.txt, branch v4.14.235

dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags

2017-09-01T09:59:17Z

DMA_MEMORY_IO was never used in the tree, so remove it. That means there is no need for the DMA_MEMORY_MAP flag either now, so remove it as well and change dma_declare_coherent_memory to return a normal errno value. Signed-off-by: Christoph Hellwig Reviewed-by: Marek Szyprowski

dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag

2017-09-01T07:50:39Z

This flag was never implemented or used. Signed-off-by: Christoph Hellwig Reviewed-by: Robin Murphy

dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent

2017-08-29T08:04:02Z

No users left, everyone switched to the _attrs versions. Signed-off-by: Christoph Hellwig

DMA-API.txt: standardize document format

2017-07-14T19:51:32Z

Each text file under Documentation follows a different format. Some doesn't even have titles! Change its representation to follow the adopted standard, using ReST markups for it to be parseable by Sphinx: - Fix some title marks to match ReST; - use :Author: for author name; - foo_ is an hyperlink. Get rid of it; - Mark literal blocks as such; - Use tables on some places that are almost using the table format. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet

Documentation: DMA API: fix a typo in a function name

2017-06-05T21:57:02Z

Correct the typo, the wrongly typed function does not exist. Fixes: 6c9c6d6301287e ("dma-debug: New interfaces to debug dma mapping errors") Signed-off-by: Wolfram Sang Signed-off-by: Jonathan Corbet

dma-mapping: add dma_{map,unmap}_resource

2016-09-26T16:46:41Z

Map/Unmap a device MMIO resource from a physical address. If no dma_map_ops method is available the operation is a no-op. Signed-off-by: Niklas Söderlund Acked-by: Arnd Bergmann Signed-off-by: Vinod Koul

dma-mapping: use unsigned long for dma_attrs

2016-08-04T12:50:07Z

The dma-mapping core and the implementations do not change the DMA attributes passed by pointer. Thus the pointer can point to const data. However the attributes do not have to be a bitfield. Instead unsigned long will do fine: 1. This is just simpler. Both in terms of reading the code and setting attributes. Instead of initializing local attributes on the stack and passing pointer to it to dma_set_attr(), just set the bits. 2. It brings safeness and checking for const correctness because the attributes are passed by value. Semantic patches for this change (at least most of them): virtual patch virtual context @r@ identifier f, attrs; @@ f(..., - struct dma_attrs *attrs + unsigned long attrs , ...) { ... } @@ identifier r.f; @@ f(..., - NULL + 0 ) and // Options: --all-includes virtual patch virtual context @r@ identifier f, attrs; type t; @@ t f(..., struct dma_attrs *attrs); @@ identifier r.f; @@ f(..., - NULL + 0 ) Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com Signed-off-by: Krzysztof Kozlowski Acked-by: Vineet Gupta Acked-by: Robin Murphy Acked-by: Hans-Christian Noren Egtvedt Acked-by: Mark Salter [c6x] Acked-by: Jesper Nilsson [cris] Acked-by: Daniel Vetter [drm] Reviewed-by: Bart Van Assche Acked-by: Joerg Roedel [iommu] Acked-by: Fabien Dessenne [bdisp] Reviewed-by: Marek Szyprowski [vb2-core] Acked-by: David Vrabel [xen] Acked-by: Konrad Rzeszutek Wilk [xen swiotlb] Acked-by: Joerg Roedel [iommu] Acked-by: Richard Kuo [hexagon] Acked-by: Geert Uytterhoeven [m68k] Acked-by: Gerald Schaefer [s390] Acked-by: Bjorn Andersson Acked-by: Hans-Christian Noren Egtvedt [avr32] Acked-by: Vineet Gupta [arc] Acked-by: Robin Murphy [arm64 and dma-iommu] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

DMA-API: fix confusing sentence in Documentation/DMA-API.txt

2016-01-12T01:29:00Z

Change the phrase "handed off to the driver" to "handed off to the device" as in the paragraph below. Signed-off-by: Masahiro Yamada Signed-off-by: Jonathan Corbet

dma: remove external references to dma_supported

2015-11-09T23:11:24Z

Signed-off-by: Christoph Hellwig Acked-by: Greg Kroah-Hartman Cc: Alan Stern Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Documentation: DMA API: Be more explicit that nents is always the same

2015-09-24T21:50:06Z

The nents argument to the DMA API functions operating on scatterlists is always the same. The documentation used different argument names and the matter was not mentioned in Documentation/DMA-API-HOWTO.txt at all. Fix these. Signed-off-by: Sakari Ailus Signed-off-by: Jonathan Corbet