• Linus Torvalds's avatar
    Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping · e5a59464
    Linus Torvalds authored
    Pull dma-mapping updates from Christoph Hellwig:
    
     - replace the force_dma flag with a dma_configure bus method. (Nipun
       Gupta, although one patch is іncorrectly attributed to me due to a
       git rebase bug)
    
     - use GFP_DMA32 more agressively in dma-direct. (Takashi Iwai)
    
     - remove PCI_DMA_BUS_IS_PHYS and rely on the dma-mapping API to do the
       right thing for bounce buffering.
    
     - move dma-debug initialization to common code, and apply a few
       cleanups to the dma-debug code.
    
     - cleanup the Kconfig mess around swiotlb selection
    
     - swiotlb comment fixup (Yisheng Xie)
    
     - a trivial swiotlb fix. (Dan Carpenter)
    
     - support swiotlb on RISC-V. (based on a patch from Palmer Dabbelt)
    
     - add a new generic dma-noncoherent dma_map_ops implementation and use
       it for arc, c6x and nds32.
    
     - improve scatterlist validity checking in dma-debug. (Robin Murphy)
    
     - add a struct device quirk to limit the dma-mask to 32-bit due to
       bridge/system issues, and switch x86 to use it instead of a local
       hack for VIA bridges.
    
     - handle devices without a dma_mask more gracefully in the dma-direct
       code.
    
    * tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping: (48 commits)
      dma-direct: don't crash on device without dma_mask
      nds32: use generic dma_noncoherent_ops
      nds32: implement the unmap_sg DMA operation
      nds32: consolidate DMA cache maintainance routines
      x86/pci-dma: switch the VIA 32-bit DMA quirk to use the struct device flag
      x86/pci-dma: remove the explicit nodac and allowdac option
      x86/pci-dma: remove the experimental forcesac boot option
      Documentation/x86: remove a stray reference to pci-nommu.c
      core, dma-direct: add a flag 32-bit dma limits
      dma-mapping: remove unused gfp_t parameter to arch_dma_alloc_attrs
      dma-debug: check scatterlist segments
      c6x: use generic dma_noncoherent_ops
      arc: use generic dma_noncoherent_ops
      arc: fix arc_dma_{map,unmap}_page
      arc: fix arc_dma_sync_sg_for_{cpu,device}
      arc: simplify arc_dma_sync_single_for_{cpu,device}
      dma-mapping: provide a generic dma-noncoherent implementation
      dma-mapping: simplify Kconfig dependencies
      riscv: add swiotlb support
      riscv: only enable ZONE_DMA32 for 64-bit
      ...
    e5a59464
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