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
