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authorClemens Ladisch <clemens@ladisch.de>2009-12-18 09:31:31 +0100
committerTakashi Iwai <tiwai@suse.de>2009-12-18 12:58:14 +0100
commitc55675e348d9630c1ca69a190529bed1108c649d (patch)
treed5429d11c35220bf0442ada0213e9676b716cfea /sound/usb/usbaudio.c
parent149feef54bf543448dd4ec5820ef8ae178021c3a (diff)
sound: usb-audio: 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>
Diffstat (limited to 'sound/usb/usbaudio.c')
-rw-r--r--sound/usb/usbaudio.c46
1 files changed, 5 insertions, 41 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index af8869a8a79..31b63ea098b 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -44,7 +44,6 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/usb.h>
-#include <linux/vmalloc.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <sound/core.h>
@@ -735,41 +734,6 @@ static void snd_complete_sync_urb(struct urb *urb)
}
-/* get the physical page pointer at 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 virtual buffer; may be called more than once */
-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) {
- if (runtime->dma_bytes >= size)
- return 0; /* already large enough */
- vfree(runtime->dma_area);
- }
- runtime->dma_area = vmalloc_user(size);
- if (!runtime->dma_area)
- return -ENOMEM;
- runtime->dma_bytes = size;
- return 0;
-}
-
-/* free virtual buffer; may be called more than once */
-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;
-}
-
-
/*
* unlink active urbs.
*/
@@ -1449,8 +1413,8 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream,
unsigned int channels, rate, format;
int ret, changed;
- ret = snd_pcm_alloc_vmalloc_buffer(substream,
- params_buffer_bytes(hw_params));
+ ret = snd_pcm_lib_alloc_vmalloc_buffer(substream,
+ params_buffer_bytes(hw_params));
if (ret < 0)
return ret;
@@ -1507,7 +1471,7 @@ static int snd_usb_hw_free(struct snd_pcm_substream *substream)
subs->period_bytes = 0;
if (!subs->stream->chip->shutdown)
release_substream_urbs(subs, 0);
- return snd_pcm_free_vmalloc_buffer(substream);
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
}
/*
@@ -1973,7 +1937,7 @@ static struct snd_pcm_ops snd_usb_playback_ops = {
.prepare = snd_usb_pcm_prepare,
.trigger = snd_usb_pcm_playback_trigger,
.pointer = snd_usb_pcm_pointer,
- .page = snd_pcm_get_vmalloc_page,
+ .page = snd_pcm_lib_get_vmalloc_page,
};
static struct snd_pcm_ops snd_usb_capture_ops = {
@@ -1985,7 +1949,7 @@ static struct snd_pcm_ops snd_usb_capture_ops = {
.prepare = snd_usb_pcm_prepare,
.trigger = snd_usb_pcm_capture_trigger,
.pointer = snd_usb_pcm_pointer,
- .page = snd_pcm_get_vmalloc_page,
+ .page = snd_pcm_lib_get_vmalloc_page,
};