Re: [PATCH 5/5] ASoC: sh: rz-ssi: Add functions to get/set substream pointer

From: Lad, Prabhakar
Date: Mon Jan 10 2022 - 11:14:51 EST


Hi Mark,

Thank you for the review.

On Mon, Jan 10, 2022 at 3:10 PM Mark Brown <broonie@xxxxxxxxxx> wrote:
>
> On Mon, Jan 10, 2022 at 09:47:11AM +0000, Lad Prabhakar wrote:
>
> > +static struct snd_pcm_substream *rz_ssi_get_substream(struct rz_ssi_stream *strm)
> > +{
> > + struct rz_ssi_priv *ssi = strm->priv;
> > + struct snd_pcm_substream *substream;
> > + unsigned long flags;
> > +
> > + spin_lock_irqsave(&ssi->lock, flags);
> > + substream = strm->substream;
> > + spin_unlock_irqrestore(&ssi->lock, flags);
>
> This locking doesn't seem useful, we just take a copy of the lock and
> then immediately return so the lock isn't protecting anything in
> particular - the caller can happily continue using the substream after
> the variable has been updated.
>
Ok will drop the locking from get function.

Cheers,
Prabhakar