linux-kernel - Re: [PATCH] [media] Staging: media/lirc: don't call put_ir

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Message-ID: <20170217221219.GF4108@mwanda>
Date:   Sat, 18 Feb 2017 01:12:19 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Jarod Wilson <jarod@...sonet.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mihaela Muraru <mihaela.muraru21@...il.com>,
        RitwikGopi <ritwikgopi@...il.com>, linux-media@...r.kernel.org,
        devel@...verdev.osuosl.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [media] Staging: media/lirc: don't call put_ir_rx on rx
 twice

This one is a false positive.  The original code is correct.

I was looking through my mail boxes to see the history of this and why
it hadn't been fixed earlier.  Someone tried to fix it in 2011:
https://www.spinics.net/lists/linux-driver-devel/msg17403.html
Then I complained about it again in 2014 when I was looking at a
different bug in that same function.  Now you're the third person to
think this code is suspicious.

I think part of the problem is that get_ir_rx(ir) is hidden as a
function parameter instead of on its own line.  But really even that
wouldn't totally fix the issue.

regards,
dan carpenter