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| author | Takashi Iwai <tiwai@suse.de> | 2011-09-28 17:12:59 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-09-28 17:15:14 +0200 |
| commit | 18a2b9623370479d1646b9b94e3528683f3b74de (patch) | |
| tree | 8dc90994f1cdccb6b516ae4f71a299c8fea0fed7 /sound/core | |
| parent | ALSA: hda:via - Skip creations of empty PCM streams (diff) | |
| download | linux-18a2b9623370479d1646b9b94e3528683f3b74de.tar.xz linux-18a2b9623370479d1646b9b94e3528683f3b74de.zip | |
ALSA: pcm - Export snd_pcm_lib_default_mmap() helper
Export the default mmap function, snd_pcm_lib_default_mmap().
The upcoming non-snooping support in HD-audio driver will use this
to override the mmap method.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/pcm_native.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 1c6be91dfb98..b4bf4a4d94a9 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3156,8 +3156,8 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { /* * mmap the DMA buffer on RAM */ -static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, - struct vm_area_struct *area) +int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *area) { area->vm_flags |= VM_RESERVED; #ifdef ARCH_HAS_DMA_MMAP_COHERENT @@ -3177,6 +3177,7 @@ static int snd_pcm_default_mmap(struct snd_pcm_substream *substream, area->vm_ops = &snd_pcm_vm_ops_data_fault; return 0; } +EXPORT_SYMBOL_GPL(snd_pcm_lib_default_mmap); /* * mmap the DMA buffer on I/O memory area @@ -3242,7 +3243,7 @@ int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, if (substream->ops->mmap) err = substream->ops->mmap(substream, area); else - err = snd_pcm_default_mmap(substream, area); + err = snd_pcm_lib_default_mmap(substream, area); if (!err) atomic_inc(&substream->mmap_count); return err; |