iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent()

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Use the dma_direct_*() helpers and clean up the code flow.

Tested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Jon Mason <jdmason@kudzu.us>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Muli Ben-Yehuda <mulix@mulix.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: iommu@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/20180319103826.12853-9-hch@lst.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Christoph Hellwig 2018-03-19 11:38:20 +01:00 • committed by Ingo Molnar

parent b468620f2a

commit d657c5c73c

2 changed files with 17 additions and 46 deletions

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1

drivers/iommu/Kconfig

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62

drivers/iommu/intel-iommu.c

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