tree c2d5a33ec0ba493b004b62f73492ffa6a8966e47
parent b400585720820077704c84813930a3e255f87a23
author Christoph Hellwig <hch@lst.de> 1495443330 +0200
committer Christoph Hellwig <hch@lst.de> 1497949979 +0200

iommu/dma: don't rely on DMA_ERROR_CODE

DMA_ERROR_CODE is not a public API and will go away soon.  dma dma-iommu
driver already implements a proper ->mapping_error method, so it's only
using the value internally.  Add a new local define using the value
that arm64 which is the only current user of dma-iommu.

Signed-off-by: Christoph Hellwig <hch@lst.de>