stmmac: add length field to dma data

Browse source

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>

...

This commit is contained in:

Giuseppe Cavallaro 2016-02-29 14:27:31 +01:00 • committed by David S. Miller

parent e3ad57c967

commit 553e2ab313

4 changed files with 16 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

drivers/net/ethernet/stmicro/stmmac/chain_mode.c

View file

5

drivers/net/ethernet/stmicro/stmmac/ring_mode.c

View file

1

drivers/net/ethernet/stmicro/stmmac/stmmac.h

View file

11

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

View file