netdev - Re: [PATCH v4 4/8] PCI: replace pci_dev::driver usage that gets the driver name

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Message-ID: <20210928100127.GA16801@corigine.com>
Date:   Tue, 28 Sep 2021 12:01:28 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Uwe Kleine-König <uwe@...ine-koenig.org>
Cc:     Bjorn Helgaas <helgaas@...nel.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, linux-pci@...r.kernel.org,
        kernel@...gutronix.de, Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Rafał Miłecki <zajec5@...il.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Yisen Zhuang <yisen.zhuang@...wei.com>,
        Salil Mehta <salil.mehta@...wei.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vadym Kochan <vkochan@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
        Michael Buesch <m@...s.ch>,
        Oliver O'Halloran <oohall@...il.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Alexander Duyck <alexanderduyck@...com>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-crypto@...r.kernel.org,
        netdev@...r.kernel.org, oss-drivers@...igine.com
Subject: Re: [PATCH v4 4/8] PCI: replace pci_dev::driver usage that gets the
 driver name

On Mon, Sep 27, 2021 at 10:43:22PM +0200, Uwe Kleine-König wrote:
> From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> 
> struct pci_dev::driver holds (apart from a constant offset) the same
> data as struct pci_dev::dev->driver. With the goal to remove struct
> pci_dev::driver to get rid of data duplication replace getting the
> driver name by dev_driver_string() which implicitly makes use of struct
> pci_dev::dev->driver.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

...

> diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> index 0685ece1f155..23dfb599c828 100644
> --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c
> @@ -202,7 +202,7 @@ nfp_get_drvinfo(struct nfp_app *app, struct pci_dev *pdev,
>  {
>  	char nsp_version[ETHTOOL_FWVERS_LEN] = {};
>  
> -	strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver));
> +	strlcpy(drvinfo->driver, dev_driver_string(&pdev->dev), sizeof(drvinfo->driver));

I'd slightly prefer to maintain lines under 80 columns wide.
But not nearly strongly enough to engage in a long debate about it.

In any case, for the NFP portion of this patch.

Acked-by: Simon Horman <simon.horman@...igine.com>

>  	nfp_net_get_nspinfo(app, nsp_version);
>  	snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
>  		 "%s %s %s %s", vnic_version, nsp_version,

...