Commit 1975df88 authored by Voon Weifeng's avatar Voon Weifeng Committed by David S. Miller
Browse files

net: stmmac: fix INTR TBU status affecting irq count statistic 



DMA channel status "Transmit buffer unavailable(TBU)" bit is not
considered as a successful dma tx. Hence, it should not affect
all the irq count statistic.

Fixes: 1103d3a5 ("net: stmmac: dwmac4: Also use TBU interrupt to clean TX path")
Signed-off-by: default avatarVoon Weifeng <weifeng.voon@intel.com>
Signed-off-by: default avatarVijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 022522ac

drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c

+3 −2
Original line number Diff line number Diff line
@@ -172,11 +172,12 @@ int dwmac4_dma_interrupt(void __iomem *ioaddr, 
		x->rx_normal_irq_n++;

		ret |= handle_rx;

	}

	if (likely(intr_status & (DMA_CHAN_STATUS_TI |

		DMA_CHAN_STATUS_TBU))) {

	if (likely(intr_status & DMA_CHAN_STATUS_TI)) {

		x->tx_normal_irq_n++;

		ret |= handle_tx;

	}

	if (unlikely(intr_status & DMA_CHAN_STATUS_TBU))

		ret |= handle_tx;

	if (unlikely(intr_status & DMA_CHAN_STATUS_ERI))

		x->rx_early_irq++;