linux-kernel - Re: [PATCH] HID: magicmouse: Fix an error handling path in magicmouse

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Message-ID: <20211229075025.GA11488@elementary>
Date:   Wed, 29 Dec 2021 08:50:25 +0100
From:   José Expósito <jose.exposito89@...il.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     jikos@...nel.org, benjamin.tissoires@...hat.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] HID: magicmouse: Fix an error handling path in
 magicmouse_probe()

On Tue, Dec 28, 2021 at 10:09:17PM +0100, Christophe JAILLET wrote:
> If the timer introduced by the commit below is started, then it must be
> deleted in the error handling of the probe. Otherwise it would trigger
> once the driver is no more.
> 
> Fixes: 0b91b4e4dae6 ("HID: magicmouse: Report battery level over USB")
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
>  drivers/hid/hid-magicmouse.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
> index eba1e8087bfd..b8b08f0a8c54 100644
> --- a/drivers/hid/hid-magicmouse.c
> +++ b/drivers/hid/hid-magicmouse.c
> @@ -873,6 +873,7 @@ static int magicmouse_probe(struct hid_device *hdev,
>  
>  	return 0;
>  err_stop_hw:
> +	del_timer_sync(&msc->battery_timer);
>  	hid_hw_stop(hdev);
>  	return ret;
>  }
> -- 
> 2.32.0
> 

My bad, thanks for catching it!

Tested-by: José Expósito <jose.exposito89@...il.com>