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media: solo6x10: Convert to generic PCM copy ops

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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_to_iter() returns the copied bytes, hence the error
condition is adjusted accordingly.

Acked-by: Ismael Luceno <ismael@iodev.co.uk>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
Cc: Anton Sviridenko <anton@corp.bluecherry.net>
Cc: Andrey Utkin <andrey_utkin@fastmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: linux-media@vger.kernel.org
Link: https://lore.kernel.org/r/20230815190136.8987-18-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2023-08-15 21:01:28 +02:00
parent 62da99b56f
commit 44f08b67f2
1 changed files with 6 additions and 33 deletions
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39
drivers/media/pci/solo6x10/solo6x10-g723.c
View file

@ -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 +223,9 @@ 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) !=
G723_PERIOD_BYTES)
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 +237,7 @@ 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,