From 149feef54bf543448dd4ec5820ef8ae178021c3a Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Fri, 18 Dec 2009 09:30:55 +0100
Subject: 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 snd_pcm_uframes_t vx_pcm_playback_pointer(struct snd_pcm_substream *subs)
 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_params(struct snd_pcm_substream *subs,
  */
 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 @@ static struct snd_pcm_ops vx_pcm_playback_ops = {
 	.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 @@ static struct snd_pcm_ops vx_pcm_capture_ops = {
 	.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,
 };
 
 
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