Linux-ARM-Kernel Archive on lore.kernel.org
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* fix a layering violation in videobuf2 and improve dma_map_resource v2
@ 2019-01-18 11:37 Christoph Hellwig
  2019-01-18 11:37 ` [PATCH 3/3] videobuf2: replace a layering violation with dma_map_resource Christoph Hellwig
  0 siblings, 1 reply; 17+ messages in thread
From: Christoph Hellwig @ 2019-01-18 11:37 UTC (permalink / raw)
  To: Pawel Osciak, Marek Szyprowski, Kyungmin Park, Niklas Söderlund
  Cc: Russell King, linux-kernel, iommu, Mauro Carvalho Chehab,
	linuxppc-dev, linux-arm-kernel, linux-media

Hi all,

this series fixes a rather gross layering violation in videobuf2, which
pokes into arm DMA mapping internals to get a DMA address for memory that
does not have a page structure, and to do so fixes up the dma_map_resource
implementation to not provide a somewhat dangerous default and improve
the error handling.

Changes since v1:
 - don't apply bus offsets in dma_direct_map_resource

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^ permalink raw reply	[flat|nested] 17+ messages in thread

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     [not found] <CGME20190111181841epcas3p2d7c0bf8f5c11a9863e22ec1b12da6e1b@epcas3p2.samsung.com>
2019-01-11 18:17 ` fix a layering violation in videobuf2 and improve dma_map_resource Christoph Hellwig
2019-01-11 18:17   ` [PATCH 1/3] dma-mapping: remove the default map_resource implementation Christoph Hellwig
2019-01-14 13:12     ` Robin Murphy
2019-01-14 17:08       ` Christoph Hellwig
2019-01-11 18:17   ` [PATCH 2/3] dma-mapping: don't BUG when calling dma_map_resource on RAM Christoph Hellwig
2019-01-14 14:16     ` Robin Murphy
2019-01-11 18:17   ` [PATCH 3/3] videobuf2: replace a layering violation with dma_map_resource Christoph Hellwig
2019-01-11 19:54     ` Mauro Carvalho Chehab
2019-01-14 10:31       ` Christoph Hellwig
2019-01-14 11:04         ` Mauro Carvalho Chehab
2019-01-14 11:12           ` Christoph Hellwig
2019-01-14 12:42     ` Marek Szyprowski
2019-01-17 17:21       ` Christoph Hellwig
2019-01-18  9:41         ` Marek Szyprowski
2019-01-31 15:31           ` Christoph Hellwig
2019-01-14 11:43   ` fix a layering violation in videobuf2 and improve dma_map_resource Marek Szyprowski
2019-01-18 11:37 fix a layering violation in videobuf2 and improve dma_map_resource v2 Christoph Hellwig
2019-01-18 11:37 ` [PATCH 3/3] videobuf2: replace a layering violation with dma_map_resource Christoph Hellwig

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