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net: ethernet: ti: cpsw: fix extra rx interrupt 

Now RX interrupt is triggered twice every time, because in
cpsw_rx_interrupt() it is asked first and then disabled. So there will be
pending interrupt always, when RX interrupt is enabled again in NAPI
handler.

Fix it by first disabling IRQ and then do ask.

Fixes: 870915feab ("drivers: net: cpsw: remove disable_irq/enable_irq as irq can be masked from cpsw itself")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Grygorii Strashko 2019-12-06 14:28:20 +02:00 committed by David S. Miller
parent 501a90c945
commit 51302f77be
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/ti/cpsw_priv.c
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@ -100,8 +100,8 @@ irqreturn_t cpsw_rx_interrupt(int irq, void *dev_id)
{
struct cpsw_common *cpsw = dev_id;
cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX);
writel(0, &cpsw->wr_regs->rx_en);
cpdma_ctlr_eoi(cpsw->dma, CPDMA_EOI_RX);
if (cpsw->quirk_irq) {
disable_irq_nosync(cpsw->irqs_table[0]);