net: stmmac: dwmac1000: Disable ACS if enhanced descs are not used

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ACS (auto PAD/FCS stripping) removes FCS off 802.3 packets (LLC) so that
there is no need to manually strip it for such packets. The enhanced DMA
descriptors allow to flag LLC packets so that the receiving callback can
use that to strip FCS manually or not. On the other hand, normal
descriptors do not support that.

Thus in order to not truncate LLC packet ACS should be disabled when
using normal DMA descriptors.

Fixes: 47dd7a540b ("net: add support for STMicroelectronics Ethernet controllers.")
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Remi Pommarel 2020-03-08 10:25:56 +01:00 • committed by David S. Miller

parent 17c25cafd4

commit b723bd9339

1 changed files with 2 additions and 1 deletions

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3

drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c

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