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

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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: 1103d3a5531c ("net: stmmac: dwmac4: Also use TBU interrupt to clean TX path")
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Voon Weifeng 2021-08-16 14:15:58 +08:00 committed by David S. Miller
parent 022522aca4
commit 1975df880b
1 changed files with 3 additions and 2 deletions
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5
drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
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@ -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++;