Re: [PATCH 0/4] Fix the parameter of dma_map_sg()

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在 2021/2/9 14:59, chenxiang 写道:

From: Xiang Chen <redacted>

According to Documentation/core-api/dma-api-howto.rst, the parameters
of dma_unmap_sg() must be the same as those which are passed in to the
scatter/gather mapping API.
But for some drivers under crypto, the <nents> parameter of dma_unmap_sg()
is number of elements after mapping. So fix them.

Part of the document is as follows:

To unmap a scatterlist, just call::

         dma_unmap_sg(dev, sglist, nents, direction);
	
Again, make sure DMA activity has already finished.
	
	.. note::
	
	        The 'nents' argument to the dma_unmap_sg call must be
		the _same_ one you passed into the dma_map_sg call,
		it should _NOT_ be the 'count' value _returned_ from the
		dma_map_sg call.

chenxiang (4):
   crypto: amlogic - Fix the parameter of dma_unmap_sg()
   crypto: cavium - Fix the parameter of dma_unmap_sg()
   crypto: ux500 - Fix the parameter of dma_unmap_sg()
   crypto: allwinner - Fix the parameter of dma_unmap_sg()

  drivers/crypto/allwinner/sun8i-ce/sun8i-ce-cipher.c | 9 ++++++---
  drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c   | 3 ++-
  drivers/crypto/allwinner/sun8i-ss/sun8i-ss-cipher.c | 9 ++++++---
  drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c   | 3 ++-
  drivers/crypto/amlogic/amlogic-gxl-cipher.c         | 6 +++---
  drivers/crypto/cavium/nitrox/nitrox_reqmgr.c        | 8 ++++----
  drivers/crypto/ux500/cryp/cryp_core.c               | 4 ++--
  drivers/crypto/ux500/hash/hash_core.c               | 2 +-
  8 files changed, 26 insertions(+), 18 deletions(-)