On Mon, Jul 04, 2016 at 12:20:29AM +0000, Kuninori Morimoto wrote: > > > > > > + if (!card->name) > > > > > > + card->name = card->dai_link->name;
> > > > > This will unconditionally defererence dai_link but it's optional - we > > > > > can have analogue only cards. > > > > This is not new feature. Current simple-card already has it. > > > Right, but simple-card does need DAIs IIRC while this is intended to be > > > more general. All it needs is a check before the dereference to be safe > > > so it's trivial to handle. > > Sorry, I'm not 100% understand. > > Do you mean we don't need handle card->name ? (= we should remove above ?) > > If so, we can't register card on simple-card. Because > > snd_soc_register_card() > > requests it. > This function tries to get card name from snd_soc_of_parse_card_name(). > and it tries to set card->name from dai_link if card still doesn't have name. > So, above is optional 2nd try. > Or, do you mean this if (!card->name) can goes to simple-card, instead of > utils ? > I have no objection about it , but it can be double handling ? > Because other simple family have same situation. If we try to dereference card->dai_link without checking to see if it's set then we'll crash.
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