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ASoC: qcom: Convert to generic PCM copy ops

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This patch converts the qcom lpass 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.

Reviewed-by: Mark Brown <broonie@kernel.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: Banajit Goswami <bgoswami@quicinc.com>
Link: https://lore.kernel.org/r/20230815190136.8987-21-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2023-08-15 21:01:31 +02:00
parent 95396d83e9
commit ce2d8ed8d8
1 changed files with 7 additions and 6 deletions
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13
sound/soc/qcom/lpass-platform.c
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@ -1219,7 +1219,8 @@ static int lpass_platform_pcmops_resume(struct snd_soc_component *component)
static int lpass_platform_copy(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int channel,
unsigned long pos, void __user *buf, unsigned long bytes)
unsigned long pos, struct iov_iter *buf,
unsigned long bytes)
{
struct snd_pcm_runtime *rt = substream->runtime;
unsigned int dai_id = component->id;
@ -1230,16 +1231,16 @@ static int lpass_platform_copy(struct snd_soc_component *component,
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (is_cdc_dma_port(dai_id)) {
ret = copy_from_user_toio(dma_buf, buf, bytes);
ret = copy_from_iter_toio(dma_buf, buf, bytes);
} else {
if (copy_from_user((void __force *)dma_buf, buf, bytes))
if (copy_from_iter((void __force *)dma_buf, bytes, buf) != bytes)
ret = -EFAULT;
}
} else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
if (is_cdc_dma_port(dai_id)) {
ret = copy_to_user_fromio(buf, dma_buf, bytes);
ret = copy_to_iter_fromio(buf, dma_buf, bytes);
} else {
if (copy_to_user(buf, (void __force *)dma_buf, bytes))
if (copy_to_iter((void __force *)dma_buf, bytes, buf) != bytes)
ret = -EFAULT;
}
}
@ -1260,7 +1261,7 @@ static const struct snd_soc_component_driver lpass_component_driver = {
.pcm_construct = lpass_platform_pcm_new,
.suspend = lpass_platform_pcmops_suspend,
.resume = lpass_platform_pcmops_resume,
.copy_user = lpass_platform_copy,
.copy = lpass_platform_copy,
};