net: ethernet: ti: am65-cpsw-nuss: fix irqs type

The K3 INTA driver, which is source TX/RX IRQs for CPSW NUSS, defines IRQs
triggering type as EDGE by default, but triggering type for CPSW NUSS TX/RX
IRQs has to be LEVEL as the EDGE triggering type may cause unnecessary IRQs
triggering and NAPI scheduling for empty queues. It was discovered with
RT-kernel.

Fix it by explicitly specifying CPSW NUSS TX/RX IRQ type as
IRQF_TRIGGER_HIGH.

Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
index 2bf56733ba94cf447592080e67ae3b99939a90ee..2517ffba81788e00a2c8732cd2138337b820a3d4 100644 (file)
--- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -1719,7 +1719,8 @@ static int am65_cpsw_nuss_ndev_add_napi_2g(struct am65_cpsw_common *common)
 
                ret = devm_request_irq(dev, tx_chn->irq,
                                       am65_cpsw_nuss_tx_irq,
-                                      0, tx_chn->tx_chn_name, tx_chn);
+                                      IRQF_TRIGGER_HIGH,
+                                      tx_chn->tx_chn_name, tx_chn);
                if (ret) {
                        dev_err(dev, "failure requesting tx%u irq %u, %d\n",
                                tx_chn->id, tx_chn->irq, ret);
@@ -1744,7 +1745,7 @@ static int am65_cpsw_nuss_ndev_reg_2g(struct am65_cpsw_common *common)
 
        ret = devm_request_irq(dev, common->rx_chns.irq,
                               am65_cpsw_nuss_rx_irq,
-                              0, dev_name(dev), common);
+                              IRQF_TRIGGER_HIGH, dev_name(dev), common);
        if (ret) {
                dev_err(dev, "failure requesting rx irq %u, %d\n",
                        common->rx_chns.irq, ret);