diff options
| author | Takashi Iwai <tiwai@suse.de> | 2005-05-30 18:27:03 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2005-06-22 12:27:47 +0200 |
| commit | b6a969155b04416185f368bd4e2f1d49b17c1ee1 (patch) | |
| tree | c6db67bdc4b4d107902cf6ced9d66fb0ab15600c /sound/pci/rme9652/rme9652.c | |
| parent | 4d572776d4dfa2d5385a2ec3acec3cc059149e13 (diff) | |
[ALSA] Add write support to snd-page-alloc proc file
Documentation,Memalloc module,RME HDSP driver,RME9652 driver
Add the write support to snd-page-alloc proc file for buffer pre-allocation.
Removed the pre-allocation codes via module options.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/rme9652/rme9652.c')
| -rw-r--r-- | sound/pci/rme9652/rme9652.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c index 5861f234af2..f3037402d58 100644 --- a/sound/pci/rme9652/rme9652.c +++ b/sound/pci/rme9652/rme9652.c @@ -303,18 +303,22 @@ static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer { dmab->dev.type = SNDRV_DMA_TYPE_DEV; dmab->dev.dev = snd_dma_pci_data(pci); - if (! snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) { - if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci), - size, dmab) < 0) - return -ENOMEM; + if (snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) { + if (dmab->bytes >= size) + return 0; } + if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci), + size, dmab) < 0) + return -ENOMEM; return 0; } static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci) { - if (dmab->area) + if (dmab->area) { + dmab->dev.dev = NULL; /* make it anonymous */ snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci)); + } } |