linux-kernel - Re: [PATCH v5] usb: gadget: udc: Handle gadget

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Message-ID: <2023092701-facelift-projector-d1d4@gregkh>
Date:   Wed, 27 Sep 2023 10:16:31 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Krishna Kurapati <quic_kriskura@...cinc.com>
Cc:     Alan Stern <stern@...land.harvard.edu>,
        Francesco Dolcini <francesco.dolcini@...adex.com>,
        Badhri Jagan Sridharan <badhri@...gle.com>,
        Michael Grzeschik <m.grzeschik@...gutronix.de>,
        Ivan Orlov <ivan.orlov0322@...il.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        quic_ppratap@...cinc.com, quic_wcheng@...cinc.com,
        quic_jackp@...cinc.com
Subject: Re: [PATCH v5] usb: gadget: udc: Handle gadget_connect failure
 during bind operation

On Wed, Sep 27, 2023 at 01:00:27PM +0530, Krishna Kurapati wrote:
> In the event gadget_connect call (which invokes pullup) fails,
> propagate the error to udc bind operation which in turn sends the
> error to configfs. The userspace can then retry enumeration if
> it chooses to.

Will this break userspace that is not expecting error codes to be
returned?  What userspace code will now be modified to handle this?
Where is that work happening?

thanks,

greg k-h