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On some old MAC chips without COE sometime the Transmit Underflow error is issued. The driver aborted all the transmission process and initialized it from scratch. This breaks the network activity as raised by Nachiketa on a SPEAr board. The patch is to fix this rare underflow event. The driver will only clear the interrupt and the Tx DMA will go out the Suspend state as soon as the descriptor is fetched again. The driver will continue to bump-up the DMA FIFO threshold that, indeed, helped somebody to prevent this kind of error in the past as well. Reported-by: Nachiketa Prachanda <nprachanda@ncomputing.com> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| common.h | ||
| descs.h | ||
| dwmac100_core.c | ||
| dwmac100_dma.c | ||
| dwmac100.h | ||
| dwmac1000_core.c | ||
| dwmac1000_dma.c | ||
| dwmac1000.h | ||
| dwmac_dma.h | ||
| dwmac_lib.c | ||
| enh_desc.c | ||
| Kconfig | ||
| Makefile | ||
| norm_desc.c | ||
| stmmac_ethtool.c | ||
| stmmac_main.c | ||
| stmmac_mdio.c | ||
| stmmac_timer.c | ||
| stmmac_timer.h | ||
| stmmac.h | ||