linux-kernel - Re: [EXT] Re: [PATCH 1/1] usb: gadget: call usb_gadget_check

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Message-ID: <ZJ8zwiTHKIaH5pFB@lizhi-Precision-Tower-5810>
Date:   Fri, 30 Jun 2023 15:57:54 -0400
From:   Frank Li <Frank.li@....com>
To:     Roger Quadros <rogerq@...nel.org>
Cc:     "r-gunasekaran@...com" <r-gunasekaran@...com>,
        "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
        Jun Li <jun.li@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Elson Roy Serrao <quic_eserrao@...cinc.com>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jó Ágila Bitsch <jgilab@...il.com>,
        Prashanth K <quic_prashk@...cinc.com>,
        Peter Chen <peter.chen@...nel.org>,
        "open list:USB SUBSYSTEM" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [EXT] Re: [PATCH 1/1] usb: gadget: call
 usb_gadget_check_config() to verify UDC capability

On Fri, Jun 30, 2023 at 10:43:14PM +0300, Roger Quadros wrote:
> 
> 
> >  .check_config		= dwc3_gadget_check_config, 
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/dwc3/gadget.c 
> 
> I meant gadget drivers not UDC drivers.
> 
> e.g.
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/gadget/legacy/dbgp.c
> 

This is for EHCI host controller debug port, specially implement simple
tty gadget devices. Generally used for PC. This driver suppose will not
use UDC at all.