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stmmac: remove BUS_MODE_DA 

This is a very old and often unused option to configure
a bit in a register inside the DMA. This support should
not stay under Koption and should be extended for new chips too.
This will be do later maybe via device-tree parameters.
Also no performance impact when remove this setting on STi platforms.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe CAVALLARO 2014-11-04 15:49:34 +01:00 committed by David S. Miller
parent 50fb4f7474
commit 98fbebcb6d
2 changed files with 0 additions and 14 deletions
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10
drivers/net/ethernet/stmicro/stmmac/Kconfig
View File

@ -37,14 +37,4 @@ config STMMAC_PCI
D1215994A VIRTEX FPGA board. D1215994A VIRTEX FPGA board.
If unsure, say N. If unsure, say N.
config STMMAC_DA
bool "STMMAC DMA arbitration scheme"
default n
---help---
Selecting this option, rx has priority over Tx (only for Giga
Ethernet device).
By default, the DMA arbitration scheme is based on Round-robin
(rx:tx priority is 1:1).
endif endif

4
drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
View File

@ -70,10 +70,6 @@ static int dwmac1000_dma_init(void __iomem *ioaddr, int pbl, int fb, int mb,
if (mb) if (mb)
value |= DMA_BUS_MODE_MB; value |= DMA_BUS_MODE_MB;
#ifdef CONFIG_STMMAC_DA
value |= DMA_BUS_MODE_DA; /* Rx has priority over tx */
#endif
if (atds) if (atds)
value |= DMA_BUS_MODE_ATDS; value |= DMA_BUS_MODE_ATDS;