target/linux/apm821xx/patches-4.14/023-0004-crypto4xx_core-don-t-abuse-__dma_sync_page.patch

   1 From 67d8208fba1324fa0198f9fc58a9edbe09596947 Mon Sep 17 00:00:00 2001
   2 From: Christoph Hellwig <hch@lst.de>
   3 Date: Sun, 16 Dec 2018 18:19:46 +0100
   4 Subject: [PATCH 04/15] crypto4xx_core: don't abuse __dma_sync_page
   5
   6 This function is internal to the DMA API implementation. Instead use
   7 the DMA API to properly unmap. Note that the DMA API usage in this
   8 driver is a disaster and urgently needs some work - it is missing all
   9 the unmaps, seems to do a secondary map where it looks like it should
  10 to a unmap in one place to work around cache coherency and the
  11 directions passed in seem to be partially wrong.
  12
  13 Signed-off-by: Christoph Hellwig <hch@lst.de>
  14 Tested-by: Christian Lamparter <chunkeey@gmail.com>
  15 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
  16 ---
  17  drivers/crypto/amcc/crypto4xx_core.c | 2 +-
  18  1 file changed, 1 insertion(+), 1 deletion(-)
  19
  20 --- a/drivers/crypto/amcc/crypto4xx_core.c
  21 +++ b/drivers/crypto/amcc/crypto4xx_core.c
  22 @@ -596,7 +596,7 @@ static void crypto4xx_aead_done(struct c
  23                                           pd->pd_ctl_len.bf.pkt_len,
  24                                           dst);
  25         } else {
  26 -               __dma_sync_page(sg_page(dst), dst->offset, dst->length,
  27 +               dma_unmap_page(dev->core_dev->device, pd->dest, dst->length,
  28                                 DMA_FROM_DEVICE);
  29         }
  30