netdev - Re: [net-next v14 04/12] net: mtip: The L2 switch driver for imx287

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250709121447.7cc2cd19@wsk>
Date: Wed, 9 Jul 2025 12:14:47 +0200
From: Lukasz Majewski <lukma@...x.de>
To: Paolo Abeni <pabeni@...hat.com>
Cc: Andrew Lunn <andrew+netdev@...n.ch>, davem@...emloft.net, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
 <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Richard Cochran
 <richardcochran@...il.com>, netdev@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, Stefan Wahren
 <wahrenst@....net>, Simon Horman <horms@...nel.org>, Andrew Lunn
 <andrew@...n.ch>
Subject: Re: [net-next v14 04/12] net: mtip: The L2 switch driver for imx287

Hi Paolo,

> On 7/1/25 1:49 PM, Lukasz Majewski wrote:
> > +static int mtip_sw_probe(struct platform_device *pdev)
> > +{
> > +	struct device_node *np = pdev->dev.of_node;
> > +	const struct mtip_devinfo *dev_info;
> > +	struct switch_enet_private *fep;
> > +	int ret;
> > +
> > +	fep = devm_kzalloc(&pdev->dev, sizeof(*fep), GFP_KERNEL);
> > +	if (!fep)
> > +		return -ENOMEM;
> > +
> > +	dev_info = of_device_get_match_data(&pdev->dev);
> > +	if (dev_info)
> > +		fep->quirks = dev_info->quirks;
> > +
> > +	fep->pdev = pdev;
> > +	platform_set_drvdata(pdev, fep);
> > +
> > +	fep->enet_addr = devm_platform_ioremap_resource(pdev, 0);
> > +	if (IS_ERR(fep->enet_addr))
> > +		return PTR_ERR(fep->enet_addr);
> > +
> > +	fep->irq = platform_get_irq_byname(pdev, "enet_switch");
> > +	if (fep->irq < 0)
> > +		return fep->irq;
> > +
> > +	ret = mtip_parse_of(fep, np);
> > +	if (ret < 0)
> > +		return dev_err_probe(&pdev->dev, ret,
> > +				     "OF parse error\n");
> > +
> > +	/* Create an Ethernet device instance.
> > +	 * The switch lookup address memory starts at 0x800FC000
> > +	 */
> > +	fep->hwp_enet = fep->enet_addr;
> > +	fep->hwp = fep->enet_addr + ENET_SWI_PHYS_ADDR_OFFSET;
> > +	fep->hwentry = (struct mtip_addr_table __iomem *)
> > +		(fep->hwp + MCF_ESW_LOOKUP_MEM_OFFSET);
> > +
> > +	ret = devm_regulator_get_enable_optional(&pdev->dev,
> > "phy");
> > +	if (ret)
> > +		return dev_err_probe(&pdev->dev, ret,
> > +				     "Unable to get and enable
> > 'phy'\n"); +
> > +	fep->clk_ipg = devm_clk_get_enabled(&pdev->dev, "ipg");
> > +	if (IS_ERR(fep->clk_ipg))
> > +		return dev_err_probe(&pdev->dev,
> > PTR_ERR(fep->clk_ipg),
> > +				     "Unable to acquire 'ipg'
> > clock\n"); +
> > +	fep->clk_ahb = devm_clk_get_enabled(&pdev->dev, "ahb");
> > +	if (IS_ERR(fep->clk_ahb))
> > +		return dev_err_probe(&pdev->dev,
> > PTR_ERR(fep->clk_ahb),
> > +				     "Unable to acquire 'ahb'
> > clock\n"); +
> > +	fep->clk_enet_out =
> > devm_clk_get_optional_enabled(&pdev->dev,
> > +
> > "enet_out");
> > +	if (IS_ERR(fep->clk_enet_out))
> > +		return dev_err_probe(&pdev->dev,
> > PTR_ERR(fep->clk_enet_out),
> > +				     "Unable to acquire 'enet_out'
> > clock\n"); +
> > +	/* setup MII interface for external switch ports */
> > +	mtip_enet_init(fep, 1);
> > +	mtip_enet_init(fep, 2);
> > +
> > +	spin_lock_init(&fep->learn_lock);
> > +	spin_lock_init(&fep->hw_lock);
> > +	spin_lock_init(&fep->mii_lock);  
> 
> `mii_lock` is apparently unused in the whole series.

Thanks for spotting it.

Indeed this shall have been removed when I added support for MII
operations' polling.

> 
> /P
> 




Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH, Managing Director: Johanna Denk,
Tabea Lutz HRB 165235 Munich, Office: Kirchenstr.5, D-82194
Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@...x.de

Content of type "application/pgp-signature" skipped