linux-kernel - Re: [PATCH 1/2] HID: core: Provide new max_buffer

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Message-ID: <Y8gMEn+wivZRhIsd@google.com>
Date:   Wed, 18 Jan 2023 15:11:14 +0000
From:   Lee Jones <lee@...nel.org>
To:     Jiri Kosina <jikos@...nel.org>
Cc:     benjamin.tissoires@...hat.com, avid.rheinsberg@...il.com,
        linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH 1/2] HID: core: Provide new max_buffer_size attribute to
 over-ride the default

On Wed, 18 Jan 2023, Jiri Kosina wrote:

> On Wed, 18 Jan 2023, Lee Jones wrote:
> 
> > > > Presently, when a report is processed, its size is compared solely 
> > > > against the value specified by user-space.  
> > > 
> > > While I am generally fine with the idea, I don't understand this sentence. 
> > > What exactly do you mean by 'specified by user-space'? It's defined as a 
> > > compile-time constant.
> > > 
> > > > If the received report ends up being smaller than this, the
> > > > remainder of the buffer is zeroed. 
> > 
> > Apologies for any ambiguity.
> > 
> > "its size" == "compile-time constant"
> > 
> > Would "its maximum size" read better?
> 
> I think that the confusion comes from the fact that the changelog is 
> written solely with the UHID usercase on mind ... ? (which is dealt with 
> in the independent followup patch).

Quite possibly, yes.  Since this is the way the bug was reported to me
and how I presently view it.  However, I suppose reports do not always
originate from user-space.  Good point.

How would you like me to move forward?  Would you like me to re-write
the commit log to be more generic?

-- 
Lee Jones [李琼斯]