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| author |   Giuseppe Cavallaro <peppe.cavallaro@st.com> | 2016-02-29 14:27:31 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-03-02 14:21:31 -0500 |
| commit | 553e2ab3130e9c3d234bee0c80a2a1e5057c8f9a (patch) | |
| tree | dd5dba3def9765fea5f314e97023e17dae1bf08f /drivers/net/ethernet/stmicro/stmmac/stmmac.h | |
| parent | stmmac: review RX/TX ring management (diff) | |
| download | linux-dev-553e2ab3130e9c3d234bee0c80a2a1e5057c8f9a.tar.xz linux-dev-553e2ab3130e9c3d234bee0c80a2a1e5057c8f9a.zip | |
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>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 7ae7c6430a3f..c497460c9061 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -45,6 +45,7 @@ struct stmmac_resources { struct stmmac_tx_info { dma_addr_t buf; bool map_as_page; + unsigned len; }; struct stmmac_priv { |