This patch converts the hdsp 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 inverted from copy_from/to_user().
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pci/rme9652/hdsp.c | 42 ++++++---------------------------------- 1 file changed, 6 insertions(+), 36 deletions(-)
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index 65add92c88aa..960cc75608cb 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -3961,7 +3961,7 @@ static signed char *hdsp_channel_buffer_location(struct hdsp *hdsp,
static int snd_hdsp_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 hdsp *hdsp = snd_pcm_substream_chip(substream); signed char *channel_buf; @@ -3972,28 +3972,14 @@ static int snd_hdsp_playback_copy(struct snd_pcm_substream *substream, channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, 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)) return -EFAULT; return 0; }
-static int snd_hdsp_playback_copy_kernel(struct snd_pcm_substream *substream, - int channel, unsigned long pos, - void *src, unsigned long count) -{ - struct hdsp *hdsp = snd_pcm_substream_chip(substream); - signed char *channel_buf; - - channel_buf = hdsp_channel_buffer_location(hdsp, substream->pstr->stream, channel); - if (snd_BUG_ON(!channel_buf)) - return -EIO; - memcpy(channel_buf + pos, src, count); - return 0; -} - static int snd_hdsp_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 hdsp *hdsp = snd_pcm_substream_chip(substream); signed char *channel_buf; @@ -4004,25 +3990,11 @@ static int snd_hdsp_capture_copy(struct snd_pcm_substream *substream, channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, 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)) return -EFAULT; return 0; }
-static int snd_hdsp_capture_copy_kernel(struct snd_pcm_substream *substream, - int channel, unsigned long pos, - void *dst, unsigned long count) -{ - struct hdsp *hdsp = snd_pcm_substream_chip(substream); - signed char *channel_buf; - - channel_buf = hdsp_channel_buffer_location(hdsp, substream->pstr->stream, channel); - if (snd_BUG_ON(!channel_buf)) - return -EIO; - memcpy(dst, channel_buf + pos, count); - return 0; -} - static int snd_hdsp_hw_silence(struct snd_pcm_substream *substream, int channel, unsigned long pos, unsigned long count) @@ -4950,8 +4922,7 @@ static const struct snd_pcm_ops snd_hdsp_playback_ops = { .prepare = snd_hdsp_prepare, .trigger = snd_hdsp_trigger, .pointer = snd_hdsp_hw_pointer, - .copy_user = snd_hdsp_playback_copy, - .copy_kernel = snd_hdsp_playback_copy_kernel, + .copy = snd_hdsp_playback_copy, .fill_silence = snd_hdsp_hw_silence, };
@@ -4963,8 +4934,7 @@ static const struct snd_pcm_ops snd_hdsp_capture_ops = { .prepare = snd_hdsp_prepare, .trigger = snd_hdsp_trigger, .pointer = snd_hdsp_hw_pointer, - .copy_user = snd_hdsp_capture_copy, - .copy_kernel = snd_hdsp_capture_copy_kernel, + .copy = snd_hdsp_capture_copy, };
static int snd_hdsp_create_hwdep(struct snd_card *card, struct hdsp *hdsp)