From: Barry Song <song.bao.hua@hisilicon.com>
Date: Thu, 18 Jun 2020 13:02:10 +1200
Subject: net: hns3: replace disable_irq by IRQ_NOAUTOEN flag
Patch-mainline: v5.9-rc1
Git-commit: e99a308da3c1518009a740c4d3962f616edeb642
References: jsc#SLE-14777

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@hisilicon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- 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>
@@ -156,6 +157,7 @@ static int hns3_nic_init_irq(struct hns3
 
 		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) {
@@ -165,8 +167,6 @@ static int hns3_nic_init_irq(struct hns3
 			return ret;
 		}
 
-		disable_irq(tqp_vectors->vector_irq);
-
 		irq_set_affinity_hint(tqp_vectors->vector_irq,
 				      &tqp_vectors->affinity_mask);