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authorTakashi Iwai <tiwai@suse.de>2023-08-15 21:01:32 +0200
committerTakashi Iwai <tiwai@suse.de>2023-08-18 12:19:18 +0200
commit56b00d10ffd4dcd6b068c2290ffabf0ae2d49789 (patch)
tree4c0f0effd8619e45c5beaf352dab845e7988879c /sound/soc/soc-generic-dmaengine-pcm.c
parentASoC: qcom: Convert to generic PCM copy ops (diff)
downloadlinux-56b00d10ffd4dcd6b068c2290ffabf0ae2d49789.tar.xz
linux-56b00d10ffd4dcd6b068c2290ffabf0ae2d49789.zip
ASoC: dmaengine: Convert to generic PCM copy ops
This patch converts the ASoC dmaenging driver code to use the new unified PCM copy callback. It's a straightforward conversion from *_user() to *_iter() variants. The process callback is still using the direct pointer as of now, but it'll be converted in the next patch. Note that copy_from/to_iter() returns the copied bytes, hence the error condition is adjusted accordingly. Reviewed-by: Mark Brown <broonie@kernel.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Link: https://lore.kernel.org/r/20230815190136.8987-22-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/soc/soc-generic-dmaengine-pcm.c')
-rw-r--r--sound/soc/soc-generic-dmaengine-pcm.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c
index 3b99f619e37e..f2cb75781566 100644
--- a/sound/soc/soc-generic-dmaengine-pcm.c
+++ b/sound/soc/soc-generic-dmaengine-pcm.c
@@ -287,10 +287,10 @@ static snd_pcm_uframes_t dmaengine_pcm_pointer(
return snd_dmaengine_pcm_pointer(substream);
}
-static int dmaengine_copy_user(struct snd_soc_component *component,
- struct snd_pcm_substream *substream,
- int channel, unsigned long hwoff,
- void __user *buf, unsigned long bytes)
+static int dmaengine_copy(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ int channel, unsigned long hwoff,
+ struct iov_iter *buf, unsigned long bytes)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct dmaengine_pcm *pcm = soc_component_to_pcm(component);
@@ -300,19 +300,20 @@ static int dmaengine_copy_user(struct snd_soc_component *component,
bool is_playback = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
void *dma_ptr = runtime->dma_area + hwoff +
channel * (runtime->dma_bytes / runtime->channels);
+ void *ptr = (void __force *)iter_iov_addr(buf);
if (is_playback)
- if (copy_from_user(dma_ptr, buf, bytes))
+ if (copy_from_iter(dma_ptr, bytes, buf) != bytes)
return -EFAULT;
if (process) {
- int ret = process(substream, channel, hwoff, (__force void *)buf, bytes);
+ int ret = process(substream, channel, hwoff, ptr, bytes);
if (ret < 0)
return ret;
}
if (!is_playback)
- if (copy_to_user(buf, dma_ptr, bytes))
+ if (copy_to_iter(dma_ptr, bytes, buf) != bytes)
return -EFAULT;
return 0;
@@ -337,7 +338,7 @@ static const struct snd_soc_component_driver dmaengine_pcm_component_process = {
.hw_params = dmaengine_pcm_hw_params,
.trigger = dmaengine_pcm_trigger,
.pointer = dmaengine_pcm_pointer,
- .copy_user = dmaengine_copy_user,
+ .copy = dmaengine_copy,
.pcm_construct = dmaengine_pcm_new,
};