[GIT PULL] dma-mapping updates for 5.6

[Christoph Hellwig]

The following changes since commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755:

  Linux 5.5 (2020-01-26 16:23:03 -0800)

are available in the Git repository at:

  git://git.infradead.org/users/hch/dma-mapping.git tags/dma-mapping-5.6

for you to fetch changes up to 75467ee48a5e04cf3ae3cb39aea6adee73aeff91:

  dma-direct: improve DMA mask overflow reporting (2020-02-05 18:53:41 +0100)

----------------------------------------------------------------
dma-mapping fixes for 5.6

 - give command line cma= precedence over the CONFIG_ option
   (Nicolas Saenz Julienne)
 - always allow 32-bit DMA, even for weirdly placed ZONE_DMA
 - improve the debug printks when memory is not addressable, to help
   find problems with swiotlb initialization

----------------------------------------------------------------
Christoph Hellwig (3):
      dma-direct: relax addressability checks in dma_direct_supported
      dma-direct: improve swiotlb error reporting
      dma-direct: improve DMA mask overflow reporting

Nicolas Saenz Julienne (1):
      dma-contiguous: CMA: give precedence to cmdline

 include/linux/swiotlb.h | 11 +++------
 kernel/dma/contiguous.c |  9 +++++++-
 kernel/dma/direct.c     | 61 ++++++++++++++++++++-----------------------------
 kernel/dma/swiotlb.c    | 42 +++++++++++++++++++---------------
 4 files changed, 59 insertions(+), 64 deletions(-)