linux-kernel - Re: [PATCH 1/2] thunderbolt: Fix a leak in tb_retimer

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Message-ID: <20210330104125.GP2542@lahna.fi.intel.com>
Date:   Tue, 30 Mar 2021 13:41:25 +0300
From:   Mika Westerberg <mika.westerberg@...ux.intel.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Andreas Noever <andreas.noever@...il.com>,
        Kranthi Kuntala <kranthi.kuntala@...el.com>,
        Michael Jamet <michael.jamet@...el.com>,
        Yehezkel Bernat <YehezkelShB@...il.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org, Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH 1/2] thunderbolt: Fix a leak in tb_retimer_add()

On Mon, Mar 29, 2021 at 09:07:18AM +0300, Dan Carpenter wrote:
> After the device_register() succeeds, then the correct way to clean up
> is to call device_unregister().  The unregister calls both device_del()
> and device_put().  Since this code was only device_del() it results in
> a memory leak.
> 
> Fixes: dacb12877d92 ("thunderbolt: Add support for on-board retimers")
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
> This is from a new static checker warning.  Not tested.  With new
> warnings it's also possible that I have misunderstood something
> fundamental so review carefully etc.
> 
>  drivers/thunderbolt/retimer.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Both patches applied to thunderbolt.git/fixes. Thanks Dan!