linux-kernel - Re: [PATCH v2] tablet: acecad: update the reference count of the usb interface structure

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Message-ID: <20210804110313.GF1931@kadam>
Date:   Wed, 4 Aug 2021 14:03:13 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Salah Triki <salah.triki@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Fabio Aiuto <fabioaiuto83@...il.com>,
        Ross Schmidt <ross.schm.dev@...il.com>,
        Marco Cesati <marcocesati@...il.com>,
        Brother Matthew De Angelis <matthew.v.deangelis@...il.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Ivan Safonov <insafonov@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] tablet: acecad: update the reference count of the usb
 interface structure

On Sat, Jul 31, 2021 at 05:09:38PM +0100, Salah Triki wrote:
> Based on the following documentation usb_get_inf(), use usb_get_intf()
> and usb_put_intf() in order to update the reference count of the usb
> interface structure.
> 
> Documentation of usb_get_inf():
> 
> [quote]
> Each live reference to a interface must be refcounted.
> 
> Drivers for USB interfaces should normally record such references
> in their probe methods, when they bind to an interface, and release them
> by calling usb_put_intf, in their disconnect methods.
> [/quote]
> 
> Signed-off-by: Salah Triki <salah.triki@...il.com>

Also add a Fixes tag.

regards,
dan carpenter