linux-kernel - [PATCH net-next v1 05/21] net: hinic: Open device for the user access when it is ready

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Message-Id: <9956e9af5948084d725c547e307eb13656d569fc.1632565508.git.leonro@nvidia.com>
Date:   Sat, 25 Sep 2021 14:22:45 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>, Ariel Elior <aelior@...vell.com>,
        Bin Luo <luobin9@...wei.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Coiby Xu <coiby.xu@...il.com>,
        Derek Chickles <dchickles@...vell.com>, drivers@...sando.io,
        Felix Manlunas <fmanlunas@...vell.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Geetha sowjanya <gakula@...vell.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        GR-everest-linux-l2@...vell.com, GR-Linux-NIC-Dev@...vell.com,
        hariprasad <hkelam@...vell.com>,
        Ido Schimmel <idosch@...dia.com>,
        Intel Corporation <linuxwwan@...el.com>,
        intel-wired-lan@...ts.osuosl.org,
        Ioana Ciornei <ioana.ciornei@....com>,
        Jerin Jacob <jerinj@...vell.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Jiri Pirko <jiri@...dia.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Linu Cherian <lcherian@...vell.com>,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-staging@...ts.linux.dev,
        Loic Poulain <loic.poulain@...aro.org>,
        Manish Chopra <manishc@...vell.com>,
        M Chetan Kumar <m.chetan.kumar@...el.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Michael Guralnik <michaelgur@...lanox.com>,
        netdev@...r.kernel.org, oss-drivers@...igine.com,
        Richard Cochran <richardcochran@...il.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Satanand Burla <sburla@...vell.com>,
        Sergey Ryazanov <ryazanov.s.a@...il.com>,
        Shannon Nelson <snelson@...sando.io>,
        Simon Horman <simon.horman@...igine.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>,
        Sunil Goutham <sgoutham@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        UNGLinuxDriver@...rochip.com, Vadym Kochan <vkochan@...vell.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next v1 05/21] net: hinic: Open device for the user access when it is ready

From: Leon Romanovsky <leonro@...dia.com>

Move devlink registration to be the last command in device activation,
so it opens the driver to accept such devlink commands from the user
when it is fully initialized.

Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
index b2ece3adbc72..657a15447bd0 100644
--- a/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
+++ b/drivers/net/ethernet/huawei/hinic/hinic_hw_dev.c
@@ -754,11 +754,9 @@ static int init_pfhwdev(struct hinic_pfhwdev *pfhwdev)
 		return err;
 	}
 
-	hinic_devlink_register(hwdev->devlink_dev);
 	err = hinic_func_to_func_init(hwdev);
 	if (err) {
 		dev_err(&hwif->pdev->dev, "Failed to init mailbox\n");
-		hinic_devlink_unregister(hwdev->devlink_dev);
 		hinic_pf_to_mgmt_free(&pfhwdev->pf_to_mgmt);
 		return err;
 	}
@@ -781,7 +779,7 @@ static int init_pfhwdev(struct hinic_pfhwdev *pfhwdev)
 	}
 
 	hinic_set_pf_action(hwif, HINIC_PF_MGMT_ACTIVE);
-
+	hinic_devlink_register(hwdev->devlink_dev);
 	return 0;
 }
 
@@ -793,6 +791,7 @@ static void free_pfhwdev(struct hinic_pfhwdev *pfhwdev)
 {
 	struct hinic_hwdev *hwdev = &pfhwdev->hwdev;
 
+	hinic_devlink_unregister(hwdev->devlink_dev);
 	hinic_set_pf_action(hwdev->hwif, HINIC_PF_MGMT_INIT);
 
 	if (!HINIC_IS_VF(hwdev->hwif)) {
@@ -810,8 +809,6 @@ static void free_pfhwdev(struct hinic_pfhwdev *pfhwdev)
 
 	hinic_func_to_func_free(hwdev);
 
-	hinic_devlink_unregister(hwdev->devlink_dev);
-
 	hinic_pf_to_mgmt_free(&pfhwdev->pf_to_mgmt);
 }
 
-- 
2.31.1