On Mon, 14 Aug 2023 14:15:18 +0200,
Ismael Luceno wrote:
>
> On 14/Aug/2023 13:55, Takashi Iwai wrote:
> > This patch converts the solo6x10 driver code to use the new unified
> > PCM copy callback. It's a straightforward conversion from *_user() to
> > *_iter() variants. As copy_to_iter() updates the internal offest at
> > each write, we can drop the dst counter update in the loop, too.
> >
> > Note that copy_from/to_iter() returns the copied bytes, hence the
> > error condition is inverted from copy_from/to_user().
> >
> > Cc: Bluecherry Maintainers <maintainers@xxxxxxxxxxxxxxxxx>
> > Cc: Anton Sviridenko <anton@xxxxxxxxxxxxxxxxxxx>
> > Cc: Andrey Utkin <andrey_utkin@xxxxxxxxxxxx>
> > Cc: Ismael Luceno <ismael@xxxxxxxxxxx>
> > Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx>
> > Cc: linux-media@xxxxxxxxxxxxxxx
> > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
> > ---
> > drivers/media/pci/solo6x10/solo6x10-g723.c | 38 +++-------------------
> > 1 file changed, 5 insertions(+), 33 deletions(-)
> >
> > diff --git a/drivers/media/pci/solo6x10/solo6x10-g723.c b/drivers/media/pci/solo6x10/solo6x10-g723.c
> > index 6cebad665565..aceacb822cab 100644
> > --- a/drivers/media/pci/solo6x10/solo6x10-g723.c
> > +++ b/drivers/media/pci/solo6x10/solo6x10-g723.c
> > @@ -204,9 +204,9 @@ static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
> > return idx * G723_FRAMES_PER_PAGE;
> > }
> >
> > -static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
> > - unsigned long pos, void __user *dst,
> > - unsigned long count)
> > +static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
> > + unsigned long pos, struct iov_iter *dst,
> > + unsigned long count)
> > {
> > struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
> > struct solo_dev *solo_dev = solo_pcm->solo_dev;
> > @@ -223,35 +223,8 @@ static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
> > if (err)
> > return err;
> >
> > - if (copy_to_user(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES))
> > + if (!copy_to_iter(solo_pcm->g723_buf, G723_PERIOD_BYTES, dst))
> > return -EFAULT;
> > - dst += G723_PERIOD_BYTES;
> > - }
> > -
> > - return 0;
> > -}
> > -
> > -static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
> > - unsigned long pos, void *dst,
> > - unsigned long count)
> > -{
> > - struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
> > - struct solo_dev *solo_dev = solo_pcm->solo_dev;
> > - int err, i;
> > -
> > - for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
> > - int page = (pos / G723_FRAMES_PER_PAGE) + i;
> > -
> > - err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
> > - SOLO_G723_EXT_ADDR(solo_dev) +
> > - (page * G723_PERIOD_BLOCK) +
> > - (ss->number * G723_PERIOD_BYTES),
> > - G723_PERIOD_BYTES, 0, 0);
> > - if (err)
> > - return err;
> > -
> > - memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
> > - dst += G723_PERIOD_BYTES;
> > }
> >
> > return 0;
> > @@ -263,8 +236,7 @@ static const struct snd_pcm_ops snd_solo_pcm_ops = {
> > .prepare = snd_solo_pcm_prepare,
> > .trigger = snd_solo_pcm_trigger,
> > .pointer = snd_solo_pcm_pointer,
> > - .copy_user = snd_solo_pcm_copy_user,
> > - .copy_kernel = snd_solo_pcm_copy_kernel,
> > + .copy = snd_solo_pcm_copy,
> > };
> >
> > static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
> > --
> > 2.35.3
> >
>
> Signed-off-by: Ismael Luceno <ismael@xxxxxxxxxxx>
You meant Reviewed-by or Acked-by? Signed-off-by is a tag used when
you carry a patch.
thanks,
Takashi
