Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Nitesh Narayan Lal <nitesh@redhat.com>
To:     linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
        linux-scsi@vger.kernel.org, netdev@vger.kernel.org,
        davem@davemloft.net, ajit.khaparde@broadcom.com,
        sriharsha.basavapatna@broadcom.com, somnath.kotur@broadcom.com,
        huangguangbin2@huawei.com, huangdaode@huawei.com,
        mtosatti@redhat.com, juri.lelli@redhat.com, frederic@kernel.org,
        abelits@marvell.com, bhelgaas@google.com, rostedt@goodmis.org,
        peterz@infradead.org
Cc:     nilal@redhat.com, jesse.brandeburg@intel.com, robin.murphy@arm.com,
        mingo@kernel.org, jbrandeb@kernel.org, akpm@linuxfoundation.org,
        sfr@canb.auug.org.au, stephen@networkplumber.org,
        rppt@linux.vnet.ibm.com, chris.friesen@windriver.com,
        maz@kernel.org, nhorman@tuxdriver.com, pjwaskiewicz@gmail.com,
        sassmann@redhat.com, thenzl@redhat.com, james.smart@broadcom.com,
        dick.kennedy@broadcom.com, jkc@redhat.com, faisal.latif@intel.com,
        shiraz.saleem@intel.com, tariqt@nvidia.com, ahleihel@redhat.com,
        kheib@redhat.com, borisp@nvidia.com, saeedm@nvidia.com,
        tatyana.e.nikolova@intel.com, mustafa.ismail@intel.com,
        ahs3@redhat.com, leonro@nvidia.com,
        chandrakanth.patil@broadcom.com, bjorn.andersson@linaro.org,
        chunkuang.hu@kernel.org, yongqiang.niu@mediatek.com,
        baolin.wang7@gmail.com, poros@redhat.com, minlei@redhat.com,
        emilne@redhat.com, jejb@linux.ibm.com, martin.petersen@oracle.com,
        kabel@kernel.org, viresh.kumar@linaro.org, kuba@kernel.org,
        kashyap.desai@broadcom.com, sumit.saxena@broadcom.com,
        shivasharan.srikanteshwara@broadcom.com,
        sathya.prakash@broadcom.com, sreekanth.reddy@broadcom.com,
        suganath-prabu.subramani@broadcom.com, tglx@linutronix.de,
        ley.foon.tan@intel.com, jbrunet@baylibre.com,
        johannes@sipsolutions.net, snelson@pensando.io,
        lewis.hanly@microchip.com, benve@cisco.com, _govind@gmx.com,
        jassisinghbrar@gmail.com
Subject: [PATCH v6 07/14] enic: Use irq_update_affinity_hint
Date:   Fri,  3 Sep 2021 11:24:23 -0400
Message-Id: <20210903152430.244937-8-nitesh@redhat.com>
In-Reply-To: <20210903152430.244937-1-nitesh@redhat.com>
References: <20210903152430.244937-1-nitesh@redhat.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

The driver uses irq_set_affinity_hint() to update the affinity_hint mask
that is consumed by the userspace to distribute the interrupts. However,
under the hood irq_set_affinity_hint() also applies the provided cpumask
(if not NULL) as the affinity for the given interrupt which is an
undocumented side effect.

To remove this side effect irq_set_affinity_hint() has been marked
as deprecated and new interfaces have been introduced. Hence, replace the
irq_set_affinity_hint() with the new interface irq_update_affinity_hint()
that only updates the affinity_hint pointer.

Signed-off-by: Nitesh Narayan Lal <nitesh@redhat.com>
Reviewed-by: Christian Benvenuti <benve@cisco.com>
---
 drivers/net/ethernet/cisco/enic/enic_main.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index d0a8f7106958..97eb5bd62855 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -150,10 +150,10 @@ static void enic_set_affinity_hint(struct enic *enic)
 		    !cpumask_available(enic->msix[i].affinity_mask) ||
 		    cpumask_empty(enic->msix[i].affinity_mask))
 			continue;
-		err = irq_set_affinity_hint(enic->msix_entry[i].vector,
-					    enic->msix[i].affinity_mask);
+		err = irq_update_affinity_hint(enic->msix_entry[i].vector,
+					       enic->msix[i].affinity_mask);
 		if (err)
-			netdev_warn(enic->netdev, "irq_set_affinity_hint failed, err %d\n",
+			netdev_warn(enic->netdev, "irq_update_affinity_hint failed, err %d\n",
 				    err);
 	}
 
@@ -173,7 +173,7 @@ static void enic_unset_affinity_hint(struct enic *enic)
 	int i;
 
 	for (i = 0; i < enic->intr_count; i++)
-		irq_set_affinity_hint(enic->msix_entry[i].vector, NULL);
+		irq_update_affinity_hint(enic->msix_entry[i].vector, NULL);
 }
 
 static int enic_udp_tunnel_set_port(struct net_device *netdev,
-- 
2.27.0