[alsa-devel] [PATCH] amixer: add support for TLV byte control read

Vinod Koul vinod.koul at intel.com
Fri Jan 29 14:53:44 CET 2016


On Fri, Jan 29, 2016 at 02:17:20PM +0100, Takashi Iwai wrote:
> > with this change it works and dumps 4K bytes on my screen
> > 
> > @@ -913,6 +913,13 @@ static int skl_tplg_tlv_control_get(struct snd_kcontrol
> > *kcontrol,
> >                 skl_get_module_params(skl->skl_sst, (u32 *)bc->params,
> >                                       bc->max, bc->param_id, mconfig);
> > 
> > +       /* decrement size for TLV header */
> > +       size -= 2 * sizeof(u32);
> 
> The lower bound check is also missing.
> 
> 	if (size < 2 * sizeof(u32))
> 		return -EINVAL;

I thought core and lib do check this, but yes no harm in adding will do so

Thanks
-- 
~Vinod


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