linux-kernel - Re: [net-next v4 2/6] net: marvell: prestera: Add PCI interface support

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Message-ID: <20200727141152.GM2216@nanopsycho>
Date:   Mon, 27 Jul 2020 16:11:52 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Vadym Kochan <vadym.kochan@...ision.eu>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        Andrew Lunn <andrew@...n.ch>,
        Oleksandr Mazur <oleksandr.mazur@...ision.eu>,
        Serhiy Boiko <serhiy.boiko@...ision.eu>,
        Serhiy Pshyk <serhiy.pshyk@...ision.eu>,
        Volodymyr Mytnyk <volodymyr.mytnyk@...ision.eu>,
        Taras Chornyi <taras.chornyi@...ision.eu>,
        Andrii Savka <andrii.savka@...ision.eu>,
        netdev <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Mickey Rachamim <mickeyr@...vell.com>
Subject: Re: [net-next v4 2/6] net: marvell: prestera: Add PCI interface
 support

Mon, Jul 27, 2020 at 03:29:17PM CEST, andy.shevchenko@...il.com wrote:
>On Mon, Jul 27, 2020 at 3:23 PM Vadym Kochan <vadym.kochan@...ision.eu> wrote:

[...]

>
>> +       pci_set_drvdata(pdev, fw);
>> +
>> +       err = prestera_fw_init(fw);
>> +       if (err)
>> +               goto err_prestera_fw_init;
>> +
>> +       dev_info(fw->dev.dev, "Switch FW is ready\n");
>> +
>> +       fw->wq = alloc_workqueue("prestera_fw_wq", WQ_HIGHPRI, 1);
>> +       if (!fw->wq)
>> +               goto err_wq_alloc;
>> +
>> +       INIT_WORK(&fw->evt_work, prestera_fw_evt_work_fn);
>> +
>> +       err = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI);
>> +       if (err < 0) {
>> +               pci_err(pdev, "MSI IRQ init failed\n");
>> +               goto err_irq_alloc;
>> +       }
>> +
>> +       err = request_irq(pci_irq_vector(pdev, 0), prestera_pci_irq_handler,
>> +                         0, driver_name, fw);
>> +       if (err) {
>> +               pci_err(pdev, "fail to request IRQ\n");
>> +               goto err_request_irq;
>> +       }
>> +
>> +       err = prestera_device_register(&fw->dev);
>> +       if (err)
>> +               goto err_prestera_dev_register;
>> +
>> +       return 0;
>> +
>> +err_prestera_dev_register:
>> +       free_irq(pci_irq_vector(pdev, 0), fw);
>> +err_request_irq:
>> +       pci_free_irq_vectors(pdev);
>> +err_irq_alloc:
>> +       destroy_workqueue(fw->wq);
>> +err_wq_alloc:
>> +       prestera_fw_uninit(fw);
>
>> +err_prestera_fw_init:
>> +err_pci_dev_alloc:
>> +err_dma_mask:
>
>All three are useless.

This is okay. It is symmetrical with init. err_what_you_init. It is all
over the place.

[...]