Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping

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
  ...

1 files changed, 3 insertions, 7 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 1851eaeee131..a97538b607a4 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -14,7 +14,6 @@ config SUPERH
         select HAVE_OPROFILE
         select HAVE_GENERIC_DMA_COHERENT
         select HAVE_ARCH_TRACEHOOK
-        select HAVE_DMA_API_DEBUG
         select HAVE_PERF_EVENTS
         select HAVE_DEBUG_BUGVERBOSE
         select ARCH_HAVE_CUSTOM_GPIO_H
@@ -51,6 +50,9 @@ config SUPERH
         select HAVE_ARCH_AUDITSYSCALL
         select HAVE_FUTEX_CMPXCHG if FUTEX
         select HAVE_NMI
+        select NEED_DMA_MAP_STATE
+        select NEED_SG_DMA_LENGTH
+
         help
           The SuperH is a RISC processor targeted for use in embedded systems
           and consumer electronics; it was also used in the Sega Dreamcast
@@ -161,12 +163,6 @@ config DMA_COHERENT
 config DMA_NONCOHERENT
         def_bool !DMA_COHERENT
 
-config NEED_DMA_MAP_STATE
-        def_bool DMA_NONCOHERENT
-
-config NEED_SG_DMA_LENGTH
-        def_bool y
-
 config PGTABLE_LEVELS
         default 3 if X2TLB
         default 2