net: mediatek: add next data pointer coherency protection

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The QDMA engine can fail to update the register pointing to the next TX
descriptor if this bit does not get set in the QDMA configuration register.
Not setting this bit can result in invalid values inside the TX rings
registers which will causes TX stalls.

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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John Crispin 2016-06-10 13:28:02 +02:00 • committed by David S. Miller

parent 94321a9fc9

commit 6675086d04

2 changed files with 2 additions and 1 deletions

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2

drivers/net/ethernet/mediatek/mtk_eth_soc.c

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1

drivers/net/ethernet/mediatek/mtk_eth_soc.h

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