Subject: Re: [PATCH v7 1/5] net: wan: Add support for QMC HDLC

From: Herve Codina <[email-masked]>
Date: Thu, 14 Mar 2024 08:12:00 +0100

Hi Michael,

On Thu, 14 Mar 2024 10:05:37 +1100
Michael Ellerman <[email-masked]> wrote:

> Hi Herve,
> 
> Herve Codina <[email-masked]> writes:
...
> This breaks when building as a module (eg. ppc32_allmodconfig):
> 
>   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:13:
>   ../drivers/net/wan/fsl_qmc_hdlc.c:405:25: error: ‘qmc_hdlc_driver’ undeclared here (not in a function); did you mean ‘qmc_hdlc_probe’?
>     405 | MODULE_DEVICE_TABLE(of, qmc_hdlc_driver);
>         |                         ^~~~~~~~~~~~~~~
> 
> 
> IIUIC it should be pointing to the table, not the driver, so:
> 
> diff --git a/drivers/net/wan/fsl_qmc_hdlc.c b/drivers/net/wan/fsl_qmc_hdlc.c
> index 5fd7ed325f5b..705c3681fb92 100644
> --- a/drivers/net/wan/fsl_qmc_hdlc.c
> +++ b/drivers/net/wan/fsl_qmc_hdlc.c
> @@ -402,7 +402,7 @@ static const struct of_device_id qmc_hdlc_id_table[] = {
>         { .compatible = "fsl,qmc-hdlc" },
>         {} /* sentinel */
>  };
> -MODULE_DEVICE_TABLE(of, qmc_hdlc_driver);
> +MODULE_DEVICE_TABLE(of, qmc_hdlc_id_table);
> 
>  static struct platform_driver qmc_hdlc_driver = {
>         .driver = {
> 
> 
> Which then builds correctly.

My bad, I missed that one.
I fully agree with your modification.

Do you want me to make a patch (copy/paste of your proposed modification)
or do you plan to send the patch on your side ?

Best regards,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com