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authorTakashi Iwai <tiwai@suse.de>2023-08-15 21:01:16 +0200
committerTakashi Iwai <tiwai@suse.de>2023-08-18 12:18:18 +0200
commite2964cd7ef58bd97f7acd5340e71d6b7e260fb2d (patch)
treedc7571f4cd24d0d14f8dd4d41d33338e7151b8d6 /sound
parent526a19b3e3ea7cde61c8ac0dcb2796756ef4fa16 (diff)
ALSA: gus: Convert to generic PCM copy ops
This patch converts the GUS 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/20230815190136.8987-6-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/isa/gus/gus_pcm.c23
1 files changed, 3 insertions, 20 deletions
diff --git a/sound/isa/gus/gus_pcm.c b/sound/isa/gus/gus_pcm.c
index 388db5fb65bd..850544725da7 100644
--- a/sound/isa/gus/gus_pcm.c
+++ b/sound/isa/gus/gus_pcm.c
@@ -369,7 +369,7 @@ static int playback_copy_ack(struct snd_pcm_substream *substream,
static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
int voice, unsigned long pos,
- void __user *src, unsigned long count)
+ struct iov_iter *src, unsigned long count)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct gus_pcm_private *pcmp = runtime->private_data;
@@ -379,27 +379,11 @@ static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
bpos = get_bpos(pcmp, voice, pos, len);
if (bpos < 0)
return pos;
- if (copy_from_user(runtime->dma_area + bpos, src, len))
+ if (copy_from_iter(runtime->dma_area + bpos, len, src) != len)
return -EFAULT;
return playback_copy_ack(substream, bpos, len);
}
-static int snd_gf1_pcm_playback_copy_kernel(struct snd_pcm_substream *substream,
- int voice, unsigned long pos,
- void *src, unsigned long count)
-{
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct gus_pcm_private *pcmp = runtime->private_data;
- unsigned int len = count;
- int bpos;
-
- bpos = get_bpos(pcmp, voice, pos, len);
- if (bpos < 0)
- return pos;
- memcpy(runtime->dma_area + bpos, src, len);
- return playback_copy_ack(substream, bpos, len);
-}
-
static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
int voice, unsigned long pos,
unsigned long count)
@@ -830,8 +814,7 @@ static const struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
.prepare = snd_gf1_pcm_playback_prepare,
.trigger = snd_gf1_pcm_playback_trigger,
.pointer = snd_gf1_pcm_playback_pointer,
- .copy_user = snd_gf1_pcm_playback_copy,
- .copy_kernel = snd_gf1_pcm_playback_copy_kernel,
+ .copy = snd_gf1_pcm_playback_copy,
.fill_silence = snd_gf1_pcm_playback_silence,
};