ALSA: pcm: Drop obsoleted PCM copy_user and copy_kernel ops

Finally all users have been converted to the new PCM copy ops, let's
drop the obsoleted copy_kernel and copy_user ops completely.

Link: https://lore.kernel.org/r/20230815190136.8987-26-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 1f6df47..2a81537 100644 (file)
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -71,11 +71,6 @@ struct snd_pcm_ops {
                            unsigned long pos, unsigned long bytes);
        int (*copy)(struct snd_pcm_substream *substream, int channel,
                    unsigned long pos, struct iov_iter *iter, unsigned long bytes);
-       int (*copy_user)(struct snd_pcm_substream *substream, int channel,
-                        unsigned long pos, void __user *buf,
-                        unsigned long bytes);
-       int (*copy_kernel)(struct snd_pcm_substream *substream, int channel,
-                          unsigned long pos, void *buf, unsigned long bytes);
        struct page *(*page)(struct snd_pcm_substream *substream,
                             unsigned long offset);
        int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma);

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index 3303914..4859fb1 100644 (file)
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -2031,19 +2031,6 @@ static int default_read_copy(struct snd_pcm_substream *substream,
        return 0;
 }
 
-/* a wrapper for calling old copy_kernel or copy_user ops */
-static int call_old_copy(struct snd_pcm_substream *substream,
-                        int channel, unsigned long hwoff,
-                        struct iov_iter *iter, unsigned long bytes)
-{
-       if (iov_iter_is_kvec(iter))
-               return substream->ops->copy_kernel(substream, channel, hwoff,
-                                                  iter_iov_addr(iter), bytes);
-       else
-               return substream->ops->copy_user(substream, channel, hwoff,
-                                                iter_iov_addr(iter), bytes);
-}
-
 /* call transfer with the filled iov_iter */
 static int do_transfer(struct snd_pcm_substream *substream, int c,
                       unsigned long hwoff, void *data, unsigned long bytes,
@@ -2147,7 +2134,7 @@ static int pcm_sanity_check(struct snd_pcm_substream *substream)
        if (PCM_RUNTIME_CHECK(substream))
                return -ENXIO;
        runtime = substream->runtime;
-       if (snd_BUG_ON(!substream->ops->copy && !substream->ops->copy_user && !runtime->dma_area))
+       if (snd_BUG_ON(!substream->ops->copy && !runtime->dma_area))
                return -EINVAL;
        if (runtime->state == SNDRV_PCM_STATE_OPEN)
                return -EBADFD;
@@ -2255,9 +2242,6 @@ snd_pcm_sframes_t __snd_pcm_lib_xfer(struct snd_pcm_substream *substream,
        } else {
                if (substream->ops->copy)
                        transfer = substream->ops->copy;
-               else if ((in_kernel && substream->ops->copy_kernel) ||
-                        (!in_kernel && substream->ops->copy_user))
-                       transfer = call_old_copy;
                else
                        transfer = is_playback ?
                                default_write_copy : default_read_copy;

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 34efd4d..bd9ddf4 100644 (file)
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -809,7 +809,7 @@ static int snd_pcm_hw_params(struct snd_pcm_substream *substream,
                runtime->boundary *= 2;
 
        /* clear the buffer for avoiding possible kernel info leaks */
-       if (runtime->dma_area && !substream->ops->copy && !substream->ops->copy_user) {
+       if (runtime->dma_area && !substream->ops->copy) {
                size_t size = runtime->dma_bytes;
 
                if (runtime->info & SNDRV_PCM_INFO_MMAP)