linux-kernel - Re: [PATCH v2 15/24] net: qualcomm: MODULE_DEVICE

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Date:   Mon, 11 Jun 2018 15:01:01 +0200
From:   Marcel Holtmann <marcel@...tmann.org>
To:     Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, linux-serial@...r.kernel.org,
        Lino Sanfilippo <LinoSanfilippo@....de>,
        "David S. Miller" <davem@...emloft.net>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Rob Herring <robh@...nel.org>, Johan Hovold <johan@...nel.org>,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 15/24] net: qualcomm: MODULE_DEVICE_TABLE(serdev)

Hi Ricardo,

> Export serdev table to the module header, allowing module autoload via
> udev/modprobe.
> 
> Cc: Lino Sanfilippo <LinoSanfilippo@....de>
> Cc: David S. Miller <davem@...emloft.net>
> Cc: Stefan Wahren <stefan.wahren@...e.com>
> Cc: Rob Herring <robh@...nel.org>
> Cc: Johan Hovold <johan@...nel.org>
> Cc: netdev@...r.kernel.org
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
> ---
> drivers/net/ethernet/qualcomm/qca_uart.c | 7 +++++++
> 1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/net/ethernet/qualcomm/qca_uart.c b/drivers/net/ethernet/qualcomm/qca_uart.c
> index db6068cd7a1f..6d2ac6cae63f 100644
> --- a/drivers/net/ethernet/qualcomm/qca_uart.c
> +++ b/drivers/net/ethernet/qualcomm/qca_uart.c
> @@ -405,6 +405,12 @@ static void qca_uart_remove(struct serdev_device *serdev)
> 	free_netdev(qca->net_dev);
> }
> 
> +static struct serdev_device_id qca_uart_serdev_id[] = {
> +	{ QCAUART_DRV_NAME, },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(serdev, qca_uart_serdev_id);
> +
> static struct serdev_device_driver qca_uart_driver = {
> 	.probe = qca_uart_probe,
> 	.remove = qca_uart_remove,
> @@ -412,6 +418,7 @@ static struct serdev_device_driver qca_uart_driver = {
> 		.name = QCAUART_DRV_NAME,
> 		.of_match_table = of_match_ptr(qca_uart_of_match),
> 	},
> +	.id_table = qca_uart_serdev_id,
> };

the commit message is misleading me. If I build something with ACPI or DT support, then modinfo will show all modalias information for ACPI and DT compatible strings. What else does udev/modprobe actually need? Is something broken with the modalias export?

Regards

Marcel