diff options
author | David S. Miller <davem@davemloft.net> | 2017-10-22 13:36:53 +0100 |
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committer | David S. Miller <davem@davemloft.net> | 2017-10-22 13:39:14 +0100 |
commit | f8ddadc4db6c7b7029b6d0e0d9af24f74ad27ca2 (patch) | |
tree | 0a6432aba336bae42313613f4c891bcfce02bd4e /drivers/dma/edma.c | |
parent | bdd091bab8c631bd2801af838e344fad34566410 (diff) | |
parent | b5ac3beb5a9f0ef0ea64cd85faf94c0dc4de0e42 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
There were quite a few overlapping sets of changes here.
Daniel's bug fix for off-by-ones in the new BPF branch instructions,
along with the added allowances for "data_end > ptr + x" forms
collided with the metadata additions.
Along with those three changes came veritifer test cases, which in
their final form I tried to group together properly. If I had just
trimmed GIT's conflict tags as-is, this would have split up the
meta tests unnecessarily.
In the socketmap code, a set of preemption disabling changes
overlapped with the rename of bpf_compute_data_end() to
bpf_compute_data_pointers().
Changes were made to the mv88e6060.c driver set addr method
which got removed in net-next.
The hyperv transport socket layer had a locking change in 'net'
which overlapped with a change of socket state macro usage
in 'net-next'.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/dma/edma.c')
-rw-r--r-- | drivers/dma/edma.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 3879f80a4815..a7ea20e7b8e9 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -1143,11 +1143,24 @@ static struct dma_async_tx_descriptor *edma_prep_dma_memcpy( struct edma_desc *edesc; struct device *dev = chan->device->dev; struct edma_chan *echan = to_edma_chan(chan); - unsigned int width, pset_len; + unsigned int width, pset_len, array_size; if (unlikely(!echan || !len)) return NULL; + /* Align the array size (acnt block) with the transfer properties */ + switch (__ffs((src | dest | len))) { + case 0: + array_size = SZ_32K - 1; + break; + case 1: + array_size = SZ_32K - 2; + break; + default: + array_size = SZ_32K - 4; + break; + } + if (len < SZ_64K) { /* * Transfer size less than 64K can be handled with one paRAM @@ -1169,7 +1182,7 @@ static struct dma_async_tx_descriptor *edma_prep_dma_memcpy( * When the full_length is multibple of 32767 one slot can be * used to complete the transfer. */ - width = SZ_32K - 1; + width = array_size; pset_len = rounddown(len, width); /* One slot is enough for lengths multiple of (SZ_32K -1) */ if (unlikely(pset_len == len)) @@ -1217,7 +1230,7 @@ static struct dma_async_tx_descriptor *edma_prep_dma_memcpy( } dest += pset_len; src += pset_len; - pset_len = width = len % (SZ_32K - 1); + pset_len = width = len % array_size; ret = edma_config_pset(chan, &edesc->pset[1], src, dest, 1, width, pset_len, DMA_MEM_TO_MEM); |