ALSA: pcm: Drop PCM vmalloc buffer helpers

As the last-standing user of PCM vmalloc buffer helper API took its
own buffer management, we can finally drop those API functions, which
were leftover after reorganization of ALSA memalloc code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20240807152725.18948-3-tiwai@suse.de

1 files changed, 0 insertions, 59 deletions

diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c
index 506386959f08..8e4c68e3bbd0 100644
--- a/sound/core/pcm_memory.c
+++ b/sound/core/pcm_memory.c
@@ -9,7 +9,6 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/moduleparam.h>
-#include <linux/vmalloc.h>
 #include <linux/export.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -497,61 +496,3 @@ int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
 	return 0;
 }
 EXPORT_SYMBOL(snd_pcm_lib_free_pages);
-
-int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
-				      size_t size, gfp_t gfp_flags)
-{
-	struct snd_pcm_runtime *runtime;
-
-	if (PCM_RUNTIME_CHECK(substream))
-		return -EINVAL;
-	runtime = substream->runtime;
-	if (runtime->dma_area) {
-		if (runtime->dma_bytes >= size)
-			return 0; /* already large enough */
-		vfree(runtime->dma_area);
-	}
-	runtime->dma_area = __vmalloc(size, gfp_flags);
-	if (!runtime->dma_area)
-		return -ENOMEM;
-	runtime->dma_bytes = size;
-	return 1;
-}
-EXPORT_SYMBOL(_snd_pcm_lib_alloc_vmalloc_buffer);
-
-/**
- * snd_pcm_lib_free_vmalloc_buffer - free vmalloc buffer
- * @substream: the substream with a buffer allocated by
- *	snd_pcm_lib_alloc_vmalloc_buffer()
- *
- * Return: Zero if successful, or a negative error code on failure.
- */
-int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream)
-{
-	struct snd_pcm_runtime *runtime;
-
-	if (PCM_RUNTIME_CHECK(substream))
-		return -EINVAL;
-	runtime = substream->runtime;
-	vfree(runtime->dma_area);
-	runtime->dma_area = NULL;
-	return 0;
-}
-EXPORT_SYMBOL(snd_pcm_lib_free_vmalloc_buffer);
-
-/**
- * snd_pcm_lib_get_vmalloc_page - map vmalloc buffer offset to page struct
- * @substream: the substream with a buffer allocated by
- *	snd_pcm_lib_alloc_vmalloc_buffer()
- * @offset: offset in the buffer
- *
- * This function is to be used as the page callback in the PCM ops.
- *
- * Return: The page struct, or %NULL on failure.
- */
-struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
-					  unsigned long offset)
-{
-	return vmalloc_to_page(substream->runtime->dma_area + offset);
-}
-EXPORT_SYMBOL(snd_pcm_lib_get_vmalloc_page);