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    Merge tag 'dma-mapping-4.20' of git://git.infradead.org/users/hch/dma-mapping · cff22949
    Linus Torvalds authored
    Pull dma mapping updates from Christoph Hellwig:
     "First batch of dma-mapping changes for 4.20.
    
      There will be a second PR as some big changes were only applied just
      before the end of the merge window, and I want to give them a few more
      days in linux-next.
    
      Summary:
    
       - mostly more consolidation of the direct mapping code, including
         converting over hexagon, and merging the coherent and non-coherent
         code into a single dma_map_ops instance (me)
    
       - cleanups for the dma_configure/dma_unconfigure callchains (me)
    
       - better handling of dma_masks in odd setups (me, Alexander Duyck)
    
       - better debugging of passing vmalloc address to the DMA API (Stephen
         Boyd)
    
       - CMA command line parsing fix (He Zhe)"
    
    * tag 'dma-mapping-4.20' of git://git.infradead.org/users/hch/dma-mapping: (27 commits)
      dma-direct: respect DMA_ATTR_NO_WARN
      dma-mapping: translate __GFP_NOFAIL to DMA_ATTR_NO_WARN
      dma-direct: document the zone selection logic
      dma-debug: Check for drivers mapping invalid addresses in dma_map_single()
      dma-direct: fix return value of dma_direct_supported
      dma-mapping: move dma_default_get_required_mask under ifdef
      dma-direct: always allow dma mask <= physiscal memory size
      dma-direct: implement complete bus_dma_mask handling
      dma-direct: refine dma_direct_alloc zone selection
      dma-direct: add an explicit dma_direct_get_required_mask
      dma-mapping: make the get_required_mask method available unconditionally
      unicore32: remove swiotlb support
      Revert "dma-mapping: clear dev->dma_ops in arch_teardown_dma_ops"
      dma-mapping: support non-coherent devices in dma_common_get_sgtable
      dma-mapping: consolidate the dma mmap implementations
      dma-mapping: merge direct and noncoherent ops
      dma-mapping: move the dma_coherent flag to struct device
      MIPS: don't select DMA_MAYBE_COHERENT from DMA_PERDEV_COHERENT
      dma-mapping: add the missing ARCH_HAS_SYNC_DMA_FOR_CPU_ALL declaration
      dma-mapping: fix panic caused by passing empty cma command line argument
      ...
    cff22949
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