Commit 02ad6ced authored by Yonglong Liu's avatar Yonglong Liu Committed by Greg Kroah-Hartman

net: hns: Free irq when exit from abnormal branch

[ Upstream commit c82bd077 ]

1.In "hns_nic_init_irq", if request irq fail at index i,
  the function return directly without releasing irq resources
  that already requested.

2.In "hns_nic_net_up" after "hns_nic_init_irq",
  if exceptional branch occurs, irqs that already requested
  are not release.
Signed-off-by: default avatarYonglong Liu <liuyonglong@huawei.com>
Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 5ddca1a9
......@@ -1384,6 +1384,22 @@ static int hns_nic_init_affinity_mask(int q_num, int ring_idx,
return cpu;
}
static void hns_nic_free_irq(int q_num, struct hns_nic_priv *priv)
{
int i;
for (i = 0; i < q_num * 2; i++) {
if (priv->ring_data[i].ring->irq_init_flag == RCB_IRQ_INITED) {
irq_set_affinity_hint(priv->ring_data[i].ring->irq,
NULL);
free_irq(priv->ring_data[i].ring->irq,
&priv->ring_data[i]);
priv->ring_data[i].ring->irq_init_flag =
RCB_IRQ_NOT_INITED;
}
}
}
static int hns_nic_init_irq(struct hns_nic_priv *priv)
{
struct hnae_handle *h = priv->ae_handle;
......@@ -1409,7 +1425,7 @@ static int hns_nic_init_irq(struct hns_nic_priv *priv)
if (ret) {
netdev_err(priv->netdev, "request irq(%d) fail\n",
rd->ring->irq);
return ret;
goto out_free_irq;
}
disable_irq(rd->ring->irq);
......@@ -1424,6 +1440,10 @@ static int hns_nic_init_irq(struct hns_nic_priv *priv)
}
return 0;
out_free_irq:
hns_nic_free_irq(h->q_num, priv);
return ret;
}
static int hns_nic_net_up(struct net_device *ndev)
......@@ -1471,6 +1491,7 @@ static int hns_nic_net_up(struct net_device *ndev)
for (j = i - 1; j >= 0; j--)
hns_nic_ring_close(ndev, j);
hns_nic_free_irq(h->q_num, priv);
set_bit(NIC_STATE_DOWN, &priv->state);
return ret;
......
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