linux-kernel - Re: [PATCH v9 07/27] net: wan: Add support for QMC HDLC

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Date: Thu, 14 Mar 2024 08:21:22 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: Herve Codina <herve.codina@...tlin.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew@...n.ch>, Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>, Lee Jones <lee@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>, Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Shengjiu Wang <shengjiu.wang@...il.com>,
	Xiubo Li <Xiubo.Lee@...il.com>, Fabio Estevam <festevam@...il.com>,
	Nicolin Chen <nicoleotsuka@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Randy Dunlap <rdunlap@...radead.org>, netdev@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, alsa-devel@...a-project.org,
	Simon Horman <horms@...nel.org>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v9 07/27] net: wan: Add support for QMC HDLC

On Wed, Nov 15, 2023 at 03:39:43PM +0100, Herve Codina wrote:
> The QMC HDLC driver provides support for HDLC using the QMC (QUICC
> Multichannel Controller) to transfer the HDLC data.
> 
> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>
> Acked-by: Jakub Kicinski <kuba@...nel.org>
> ---
[ ... ]

> +
> +static const struct of_device_id qmc_hdlc_id_table[] = {
> +	{ .compatible = "fsl,qmc-hdlc" },
> +	{} /* sentinel */
> +};
> +MODULE_DEVICE_TABLE(of, qmc_hdlc_driver);

I am a bit puzzled. How does this even compile ?

Building powerpc:ppc32_allmodconfig ... failed
--------------
Error log:
In file included from include/linux/device/driver.h:21,
                 from include/linux/device.h:32,
                 from include/linux/dma-mapping.h:8,
                 from drivers/net/wan/fsl_qmc_hdlc.c:14:
drivers/net/wan/fsl_qmc_hdlc.c:783:25: error: 'qmc_hdlc_driver' undeclared here (not in a function); did you mean 'qmc_hdlc_probe'?
  783 | MODULE_DEVICE_TABLE(of, qmc_hdlc_driver);

Guenter

> +
> +static struct platform_driver qmc_hdlc_driver = {
> +	.driver = {
> +		.name = "fsl-qmc-hdlc",
> +		.of_match_table = qmc_hdlc_id_table,
> +	},
> +	.probe = qmc_hdlc_probe,
> +	.remove = qmc_hdlc_remove,
> +};
> +module_platform_driver(qmc_hdlc_driver);
> +
> +MODULE_AUTHOR("Herve Codina <herve.codina@...tlin.com>");
> +MODULE_DESCRIPTION("QMC HDLC driver");
> +MODULE_LICENSE("GPL");
> -- 
> 2.41.0
>