diff options
| author |   Iyappan Subramanian <isubramanian@apm.com> | 2016-01-21 16:07:41 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2016-01-24 22:15:56 -0800 |
| commit | b5d7a06906a4875524f5c61c0b312828bf6737de (patch) | |
| tree | 12f6a090b3a79b229f5cafadc2be96a35ae135e8 /drivers/net/ethernet/apm | |
| parent | af_unix: fix struct pid memory leak (diff) | |
| download | linux-dev-b5d7a06906a4875524f5c61c0b312828bf6737de.tar.xz linux-dev-b5d7a06906a4875524f5c61c0b312828bf6737de.zip | |
drivers: net: xgene: fix extra IRQ issue
For interrupt controller that doesn't support irq_disable and hardware
with level interrupt, an extra interrupt may be pending. This patch fixes
the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line,
as suggested by,
'commit e9849777d0e2 ("genirq: Add flag to force mask in
disable_irq[_nosync]()")'
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/apm')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 12 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 |
2 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index a4799c1fc7d4..5eb9b20c0eea 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -628,6 +628,7 @@ static int xgene_enet_register_irq(struct net_device *ndev) int ret; ring = pdata->rx_ring; + irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq, IRQF_SHARED, ring->irq_name, ring); if (ret) @@ -635,6 +636,7 @@ static int xgene_enet_register_irq(struct net_device *ndev) if (pdata->cq_cnt) { ring = pdata->tx_ring->cp_ring; + irq_set_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); ret = devm_request_irq(dev, ring->irq, xgene_enet_rx_irq, IRQF_SHARED, ring->irq_name, ring); if (ret) { @@ -649,15 +651,19 @@ static int xgene_enet_register_irq(struct net_device *ndev) static void xgene_enet_free_irq(struct net_device *ndev) { struct xgene_enet_pdata *pdata; + struct xgene_enet_desc_ring *ring; struct device *dev; pdata = netdev_priv(ndev); dev = ndev_to_dev(ndev); - devm_free_irq(dev, pdata->rx_ring->irq, pdata->rx_ring); + ring = pdata->rx_ring; + irq_clear_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); + devm_free_irq(dev, ring->irq, ring); if (pdata->cq_cnt) { - devm_free_irq(dev, pdata->tx_ring->cp_ring->irq, - pdata->tx_ring->cp_ring); + ring = pdata->tx_ring->cp_ring; + irq_clear_status_flags(ring->irq, IRQ_DISABLE_UNLAZY); + devm_free_irq(dev, ring->irq, ring); } } diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index 70d5b62c125a..248dfc40a761 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -25,6 +25,7 @@ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/efi.h> +#include <linux/irq.h> #include <linux/io.h> #include <linux/of_platform.h> #include <linux/of_net.h> |