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ALSA: rme9652: Convert to generic PCM copy ops

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This patch converts the rme9652 driver code to use the new unified PCM
copy callback.  It's a straightforward conversion from *_user() to
*_iter() variants.

Note that copy_from/to_iter() returns the copied bytes, hence the
error condition is adjusted accordingly.

Link: https://lore.kernel.org/r/20230815190136.8987-14-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2023-08-15 21:01:24 +02:00
parent 90ed231177
commit 2098765e95
1 changed files with 6 additions and 40 deletions
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46
sound/pci/rme9652/rme9652.c
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@ -1844,7 +1844,7 @@ static signed char *rme9652_channel_buffer_location(struct snd_rme9652 *rme9652,
static int snd_rme9652_playback_copy(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void __user *src, unsigned long count)
struct iov_iter *src, unsigned long count)
{
struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
signed char *channel_buf;
@ -1857,30 +1857,14 @@ static int snd_rme9652_playback_copy(struct snd_pcm_substream *substream,
channel);
if (snd_BUG_ON(!channel_buf))
return -EIO;
if (copy_from_user(channel_buf + pos, src, count))
if (copy_from_iter(channel_buf + pos, count, src) != count)
return -EFAULT;
return 0;
}
static int snd_rme9652_playback_copy_kernel(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void *src, unsigned long count)
{
struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
signed char *channel_buf;
channel_buf = rme9652_channel_buffer_location(rme9652,
substream->pstr->stream,
channel);
if (snd_BUG_ON(!channel_buf))
return -EIO;
memcpy(channel_buf + pos, src, count);
return 0;
}
static int snd_rme9652_capture_copy(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void __user *dst, unsigned long count)
struct iov_iter *dst, unsigned long count)
{
struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
signed char *channel_buf;
@ -1893,27 +1877,11 @@ static int snd_rme9652_capture_copy(struct snd_pcm_substream *substream,
channel);
if (snd_BUG_ON(!channel_buf))
return -EIO;
if (copy_to_user(dst, channel_buf + pos, count))
if (copy_to_iter(channel_buf + pos, count, dst) != count)
return -EFAULT;
return 0;
}
static int snd_rme9652_capture_copy_kernel(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
void *dst, unsigned long count)
{
struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
signed char *channel_buf;
channel_buf = rme9652_channel_buffer_location(rme9652,
substream->pstr->stream,
channel);
if (snd_BUG_ON(!channel_buf))
return -EIO;
memcpy(dst, channel_buf + pos, count);
return 0;
}
static int snd_rme9652_hw_silence(struct snd_pcm_substream *substream,
int channel, unsigned long pos,
unsigned long count)
@ -2370,8 +2338,7 @@ static const struct snd_pcm_ops snd_rme9652_playback_ops = {
.prepare = snd_rme9652_prepare,
.trigger = snd_rme9652_trigger,
.pointer = snd_rme9652_hw_pointer,
.copy_user = snd_rme9652_playback_copy,
.copy_kernel = snd_rme9652_playback_copy_kernel,
.copy = snd_rme9652_playback_copy,
.fill_silence = snd_rme9652_hw_silence,
};
@ -2383,8 +2350,7 @@ static const struct snd_pcm_ops snd_rme9652_capture_ops = {
.prepare = snd_rme9652_prepare,
.trigger = snd_rme9652_trigger,
.pointer = snd_rme9652_hw_pointer,
.copy_user = snd_rme9652_capture_copy,
.copy_kernel = snd_rme9652_capture_copy_kernel,
.copy = snd_rme9652_capture_copy,
};
static int snd_rme9652_create_pcm(struct snd_card *card,