From: Grygorii Strashko grygorii.strashko@ti.com
[ 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 grygorii.strashko@ti.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -773,8 +773,8 @@ static irqreturn_t cpsw_rx_interrupt(int { 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]);