[PATCH 4/5] net: hns3: replace disable_irq by IRQ_NOAUTOEN flag

From: Barry Song
Date: Wed Jun 17 2020 - 21:04:58 EST


disable_irq() after request_irq() is still risk as there is a chance irq
can come after request_irq() and before disable_irq().
this should be done by IRQ_NOAUTOEN flag.

Signed-off-by: Barry Song <song.bao.hua@xxxxxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 3cd2216e49b9..1330820152fa 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -8,6 +8,7 @@
#include <linux/cpu_rmap.h>
#endif
#include <linux/if_vlan.h>
+#include <linux/irq.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/module.h>
@@ -154,6 +155,7 @@ static int hns3_nic_init_irq(struct hns3_nic_priv *priv)

tqp_vectors->name[HNAE3_INT_NAME_LEN - 1] = '\0';

+ irq_set_status_flags(tqp_vectors->vector_irq, IRQ_NOAUTOEN);
ret = request_irq(tqp_vectors->vector_irq, hns3_irq_handle, 0,
tqp_vectors->name, tqp_vectors);
if (ret) {
@@ -163,8 +165,6 @@ static int hns3_nic_init_irq(struct hns3_nic_priv *priv)
return ret;
}

- disable_irq(tqp_vectors->vector_irq);
-
irq_set_affinity_hint(tqp_vectors->vector_irq,
&tqp_vectors->affinity_mask);

--
2.23.0