Re: [PATCH] fix selector unit bug affecting some USB speakerphones

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At Mon, 6 Aug 2007 09:31:28 -0400,
Russ Cox wrote:
> 
> My reading of the maintainers file is that
> sound/usb/usbmixer.c belongs to [email protected]
> but I got no response to this message, so I am
> resending it here.

I applied it to ALSA tree.  Thanks.


Takashi

> 
> Russ
> 
> ---------- Forwarded message ----------
> From: Russ Cox <[email protected]>
> Date: Jun 21, 2007 7:48 PM
> Subject: [PATCH] fix selector unit bug affecting some USB speakerphones
> To: [email protected]
> 
> Following the suggestion in this thread:
> https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/26683
> the correct upper bound on desc[0] is 5 + num_ins not 6 + num_ins,
> because the index used later is 5+i, not 6+i.
> 
> This change makes my Vosky Chatterbox speakerphone work.
> Apparently it also helps with the Minivox MV100.
> 
> Signed-off-by: Russ Cox <[email protected]>
> 
> ---
>  sound/usb/usbmixer.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
> index 325d4b6..19776e7 100644
> --- a/sound/usb/usbmixer.c
> +++ b/sound/usb/usbmixer.c
> @@ -1483,7 +1483,7 @@ static int parse_audio_selector_unit(struct
> mixer_build *state, int unitid, unsi
>         struct snd_kcontrol *kctl;
>         char **namelist;
> 
> -       if (! num_ins || desc[0] < 6 + num_ins) {
> +       if (! num_ins || desc[0] < 5 + num_ins) {
>                 snd_printk(KERN_ERR "invalid SELECTOR UNIT descriptor
> %d\n", unitid);
>                 return -EINVAL;
>         }
> --
> 1.4.4.2
> -
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