netdev - Re: [PATCH v1 1/9] mfd: Add core driver for Nuvoton NCT6694

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Message-ID: <20241024-ladybug-of-silent-holiness-498562-mkl@pengutronix.de>
Date: Thu, 24 Oct 2024 11:57:29 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Ming Yu <a0282524688@...il.com>
Cc: tmyu0@...oton.com, lee@...nel.org, linus.walleij@...aro.org, 
	brgl@...ev.pl, andi.shyti@...nel.org, mailhol.vincent@...adoo.fr, 
	andrew+netdev@...n.ch, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, 
	pabeni@...hat.com, wim@...ux-watchdog.org, linux@...ck-us.net, jdelvare@...e.com, 
	jic23@...nel.org, lars@...afoo.de, ukleinek@...nel.org, 
	alexandre.belloni@...tlin.com, linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org, 
	linux-i2c@...r.kernel.org, linux-can@...r.kernel.org, netdev@...r.kernel.org, 
	linux-watchdog@...r.kernel.org, linux-hwmon@...r.kernel.org, linux-iio@...r.kernel.org, 
	linux-pwm@...r.kernel.org, linux-rtc@...r.kernel.org
Subject: Re: [PATCH v1 1/9] mfd: Add core driver for Nuvoton NCT6694

On 24.10.2024 16:59:14, Ming Yu wrote:
> +static int nct6694_usb_probe(struct usb_interface *iface,
> +			     const struct usb_device_id *id)
> +{
> +	struct usb_device *udev = interface_to_usbdev(iface);
> +	struct device *dev = &udev->dev;
> +	struct usb_host_interface *interface;
> +	struct usb_endpoint_descriptor *int_endpoint;
> +	struct nct6694 *nct6694;
> +	int pipe, maxp, bulk_pipe;
> +	int ret = EINVAL;
> +
> +	interface = iface->cur_altsetting;
> +	/* Binding interface class : 0xFF */
> +	if (interface->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
> +	    interface->desc.bInterfaceSubClass != 0x00 ||
> +	    interface->desc.bInterfaceProtocol != 0x00)
> +		return -ENODEV;

I think you can use USB_DEVICE_INFO() and remove this manual check

https://elixir.bootlin.com/linux/v6.11.5/source/include/linux/usb.h#L1056

[...]

> +
> +static const struct usb_device_id nct6694_ids[] = {
> +	{ USB_DEVICE(NCT6694_VENDOR_ID, NCT6694_PRODUCT_ID)},
> +	{},
> +};
> +MODULE_DEVICE_TABLE(usb, nct6694_ids);

regards,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde          |
Embedded Linux                   | https://www.pengutronix.de |
Vertretung Nürnberg              | Phone: +49-5121-206917-129 |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-9   |

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