From 64334e4f982585c1eb53d3cc067c5641aac0122b Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Fri, 6 Dec 2019 14:28:20 +0200 Subject: [PATCH] net: ethernet: ti: cpsw: fix extra rx interrupt [ Upstream commit 51302f77bedab8768b761ed1899c08f89af9e4e2 ] 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: 870915feabdc ("drivers: net: cpsw: remove disable_irq/enable_irq as irq can be masked from cpsw itself") Signed-off-by: Grygorii Strashko Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 8417d4c17844..0b7a3eb06a65 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -954,8 +954,8 @@ static 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]); -- GitLab