sound: sgio2audio: 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>

1 files changed, 6 insertions, 25 deletions

diff --git a/sound/mips/sgio2audio.c b/sound/mips/sgio2audio.c
index f1d9d16b5486..9b486beeb932 100644
--- a/sound/mips/sgio2audio.c
+++ b/sound/mips/sgio2audio.c
@@ -26,7 +26,6 @@
 #include <linux/delay.h>
 #include <linux/spinlock.h>
 #include <linux/gfp.h>
-#include <linux/vmalloc.h>
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
@@ -603,25 +602,14 @@ static int snd_sgio2audio_pcm_close(struct snd_pcm_substream *substream)
 static int snd_sgio2audio_pcm_hw_params(struct snd_pcm_substream *substream,
                                         struct snd_pcm_hw_params *hw_params)
 {
-        struct snd_pcm_runtime *runtime = substream->runtime;
-        int size = params_buffer_bytes(hw_params);
-
-        /* alloc virtual 'dma' area */
-        if (runtime->dma_area)
-                vfree(runtime->dma_area);
-        runtime->dma_area = vmalloc_user(size);
-        if (runtime->dma_area == NULL)
-                return -ENOMEM;
-        runtime->dma_bytes = size;
-        return 0;
+        return snd_pcm_lib_alloc_vmalloc_buffer(substream,
+                                                params_buffer_bytes(hw_params));
 }
 
 /* hw_free callback */
 static int snd_sgio2audio_pcm_hw_free(struct snd_pcm_substream *substream)
 {
-        vfree(substream->runtime->dma_area);
-        substream->runtime->dma_area = NULL;
-        return 0;
+        return snd_pcm_lib_free_vmalloc_buffer(substream);
 }
 
 /* prepare callback */
@@ -692,13 +680,6 @@ snd_sgio2audio_pcm_pointer(struct snd_pcm_substream *substream)
                                chip->channel[chan->idx].pos);
 }
 
-/* get the physical page pointer on the given offset */
-static struct page *snd_sgio2audio_page(struct snd_pcm_substream *substream,
-                                        unsigned long offset)
-{
-        return vmalloc_to_page(substream->runtime->dma_area + offset);
-}
-
 /* operators */
 static struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
         .open =        snd_sgio2audio_playback1_open,
@@ -709,7 +690,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback1_ops = {
         .prepare =     snd_sgio2audio_pcm_prepare,
         .trigger =     snd_sgio2audio_pcm_trigger,
         .pointer =     snd_sgio2audio_pcm_pointer,
-        .page =        snd_sgio2audio_page,
+        .page =        snd_pcm_lib_get_vmalloc_page,
 };
 
 static struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
@@ -721,7 +702,7 @@ static struct snd_pcm_ops snd_sgio2audio_playback2_ops = {
         .prepare =     snd_sgio2audio_pcm_prepare,
         .trigger =     snd_sgio2audio_pcm_trigger,
         .pointer =     snd_sgio2audio_pcm_pointer,
-        .page =        snd_sgio2audio_page,
+        .page =        snd_pcm_lib_get_vmalloc_page,
 };
 
 static struct snd_pcm_ops snd_sgio2audio_capture_ops = {
@@ -733,7 +714,7 @@ static struct snd_pcm_ops snd_sgio2audio_capture_ops = {
         .prepare =     snd_sgio2audio_pcm_prepare,
         .trigger =     snd_sgio2audio_pcm_trigger,
         .pointer =     snd_sgio2audio_pcm_pointer,
-        .page =        snd_sgio2audio_page,
+        .page =        snd_pcm_lib_get_vmalloc_page,
 };
 
 /*