linux-kernel - RE: [PATCH 1/2] r8152: Pass driver_info to REALTEK_USB

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Date:   Mon, 28 Oct 2019 09:41:40 +0000
From:   Hayes Wang <hayeswang@...ltek.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "oliver@...kum.org" <oliver@...kum.org>
CC:     "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 1/2] r8152: Pass driver_info to REALTEK_USB_DEVICE() macro

Kai-Heng Feng [mailto:kai.heng.feng@...onical.com]
> Sent: Friday, October 25, 2019 6:59 PM
[...]
> -#define REALTEK_USB_DEVICE(vend, prod)	\
> +#define REALTEK_USB_DEVICE(vend, prod, info)	\
>  	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
>  		       USB_DEVICE_ID_MATCH_INT_CLASS, \
>  	.idVendor = (vend), \
>  	.idProduct = (prod), \
> -	.bInterfaceClass = USB_CLASS_VENDOR_SPEC \
> +	.bInterfaceClass = USB_CLASS_VENDOR_SPEC, \
> +	.driver_info = (info) \
>  }, \
>  { \
>  	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO | \
> @@ -6739,25 +6740,26 @@ static void rtl8152_disconnect(struct
> usb_interface *intf)
>  	.idProduct = (prod), \
>  	.bInterfaceClass = USB_CLASS_COMM, \
>  	.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
> -	.bInterfaceProtocol = USB_CDC_PROTO_NONE
> +	.bInterfaceProtocol = USB_CDC_PROTO_NONE, \
> +	.driver_info = (info) \

This part is for ECM mode. Add driver_info here is useless,
because it is never be used. The driver always changes
the ECM mode to vendor mode.

Best Regards,
Hayes