sound: vx: use vmalloc buffer helper functions
Remove this duplicate of snd_pcm_alloc_vmalloc_buffer and use the
equivalent core functions instead.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/drivers/vx/vx_pcm.c b/sound/drivers/vx/vx_pcm.c
index 6644d00..c8385d2 100644
--- a/sound/drivers/vx/vx_pcm.c
+++ b/sound/drivers/vx/vx_pcm.c
@@ -46,7 +46,6 @@
*/
#include <linux/slab.h>
-#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/asoundef.h>
@@ -56,55 +55,6 @@
/*
- * we use a vmalloc'ed (sg-)buffer
- */
-
-/* get the physical page pointer on the given offset */
-static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
- unsigned long offset)
-{
- void *pageptr = subs->runtime->dma_area + offset;
- return vmalloc_to_page(pageptr);
-}
-
-/*
- * allocate a buffer via vmalloc_32().
- * called from hw_params
- * NOTE: this may be called not only once per pcm open!
- */
-static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
-{
- struct snd_pcm_runtime *runtime = subs->runtime;
- if (runtime->dma_area) {
- /* already allocated */
- if (runtime->dma_bytes >= size)
- return 0; /* already enough large */
- vfree(runtime->dma_area);
- }
- runtime->dma_area = vmalloc_32(size);
- if (! runtime->dma_area)
- return -ENOMEM;
- memset(runtime->dma_area, 0, size);
- runtime->dma_bytes = size;
- return 1; /* changed */
-}
-
-/*
- * free the buffer.
- * called from hw_free callback
- * NOTE: this may be called not only once per pcm open!
- */
-static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
-{
- struct snd_pcm_runtime *runtime = subs->runtime;
-
- vfree(runtime->dma_area);
- runtime->dma_area = NULL;
- return 0;
-}
-
-
-/*
* read three pending pcm bytes via inb()
*/
static void vx_pcm_read_per_bytes(struct vx_core *chip, struct snd_pcm_runtime *runtime,
@@ -865,7 +815,8 @@
static int vx_pcm_hw_params(struct snd_pcm_substream *subs,
struct snd_pcm_hw_params *hw_params)
{
- return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
+ return snd_pcm_lib_alloc_vmalloc_32_buffer
+ (subs, params_buffer_bytes(hw_params));
}
/*
@@ -873,7 +824,7 @@
*/
static int vx_pcm_hw_free(struct snd_pcm_substream *subs)
{
- return snd_pcm_free_vmalloc_buffer(subs);
+ return snd_pcm_lib_free_vmalloc_buffer(subs);
}
/*
@@ -953,7 +904,7 @@
.prepare = vx_pcm_prepare,
.trigger = vx_pcm_trigger,
.pointer = vx_pcm_playback_pointer,
- .page = snd_pcm_get_vmalloc_page,
+ .page = snd_pcm_lib_get_vmalloc_page,
};
@@ -1173,7 +1124,7 @@
.prepare = vx_pcm_prepare,
.trigger = vx_pcm_trigger,
.pointer = vx_pcm_capture_pointer,
- .page = snd_pcm_get_vmalloc_page,
+ .page = snd_pcm_lib_get_vmalloc_page,
};