tree dd5dba3def9765fea5f314e97023e17dae1bf08f
parent e3ad57c96715df2989ce6c18e58faf2913b305cb
author Giuseppe Cavallaro <peppe.cavallaro@st.com> 1456752451 +0100
committer David S. Miller <davem@davemloft.net> 1456946491 -0500

stmmac: add length field to dma data

Currently, the code pulls out the length field when
unmapping a buffer directly from the descriptor. This will result
in an uncached read to a dma_alloc_coherent() region. There is no
need to do this, so this patch simply puts the value directly into
a data structure which will hit the cache.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>