diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2020-05-05 19:31:26 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-06 17:53:00 -0700 |
| commit | 6f5c27f9c6f89226f5b97476797e5abedd61912c (patch) | |
| tree | 2c83bbab3ca9a60c06fe66d09544ccd03d3b0312 | |
| parent | 0735ccc9d9a4ce09154395feb70b804de7cc6ebf (diff) | |
| download | printk-6f5c27f9c6f89226f5b97476797e5abedd61912c.tar.gz | |
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>
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 2bf56733ba94cf..2517ffba81788e 100644 --- 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); |