Re: [patch 2/2] ALSA: firewire-tascam: off by one in handle_midi_tx()

[Takashi Iwai <tiwai@suse.de>]

On Thu, 15 Oct 2015 20:17:11 +0200,
Dan Carpenter wrote:
> 
> My static checker complains because tscm->spec->midi_capture_ports is
> either 2 or 4 but the tscm->tx_midi_substreams[] array has 4 elements so
> this is possibly off by one.  I have looked at the code and I think it
> should be >= instead of > as well.
> 
> Fixes: 107cc0129a68 ('ALSA: firewire-tascam: add support for incoming MIDI messages by asynchronous transaction')
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Applied, thanks.


Takashi

> 
> diff --git a/sound/firewire/tascam/tascam-transaction.c b/sound/firewire/tascam/tascam-transaction.c
> index 45c3ce3..d4f64ae 100644
> --- a/sound/firewire/tascam/tascam-transaction.c
> +++ b/sound/firewire/tascam/tascam-transaction.c
> @@ -158,7 +158,7 @@ static void handle_midi_tx(struct fw_card *card, struct fw_request *request,
>  
>  		port = b[0] >> 4;
>  		/* TODO: support virtual MIDI ports. */
> -		if (port > tscm->spec->midi_capture_ports)
> +		if (port >= tscm->spec->midi_capture_ports)
>  			goto end;
>  
>  		/* Assume the message length. */
>