[GIT PULL] dma-mapping updates for Linux 5.13

[Christoph Hellwig]

The following changes since commit 1e28eed17697bcf343c6743f0028cc3b5dd88bf0:

  Linux 5.12-rc3 (2021-03-14 14:41:02 -0700)

are available in the Git repository at:

  git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-5.13

for you to fetch changes up to a7f3d3d3600c8ed119eb0d2483de0062ce2e3707:

  dma-mapping: add unlikely hint to error path in dma_mapping_error (2021-04-02 16:41:08 +0200)

----------------------------------------------------------------
dma-mapping updates for Linux 5.13:

 - add a new dma_alloc_noncontiguous API (me, Ricardo Ribalda)
 - fix a copyright noice (Hao Fang)
 - add an unlikely annotation to dma_mapping_error (Heiner Kallweit)
 - remove a pointless empty line (Wang Qing)
 - add support for multi-pages map/unmap bencharking (Xiang Chen)

----------------------------------------------------------------
Christoph Hellwig (5):
      dma-mapping: add a dma_mmap_pages helper
      dma-mapping: refactor dma_{alloc,free}_pages
      dma-mapping: add a dma_alloc_noncontiguous API
      dma-iommu: refactor iommu_dma_alloc_remap
      dma-iommu: implement ->alloc_noncontiguous

Hao Fang (1):
      dma-mapping: benchmark: use the correct HiSilicon copyright

Heiner Kallweit (1):
      dma-mapping: add unlikely hint to error path in dma_mapping_error

Ricardo Ribalda (1):
      media: uvcvideo: Use dma_alloc_noncontiguous API

Wang Qing (1):
      dma-mapping: remove a pointless empty line in dma_alloc_coherent

Xiang Chen (1):
      dma-mapping: benchmark: Add support for multi-pages map/unmap

 Documentation/core-api/dma-api.rst              |  88 ++++++++++++++
 drivers/iommu/dma-iommu.c                       | 103 ++++++++++++-----
 drivers/media/usb/uvc/uvc_video.c               |  94 +++++++++++----
 drivers/media/usb/uvc/uvcvideo.h                |   5 +-
 include/linux/dma-map-ops.h                     |  19 +++
 include/linux/dma-mapping.h                     |  37 +++++-
 kernel/dma/map_benchmark.c                      |  23 ++--
 kernel/dma/mapping.c                            | 148 ++++++++++++++++++++++--
 tools/testing/selftests/dma/dma_map_benchmark.c |  22 +++-
 9 files changed, 456 insertions(+), 83 deletions(-)