void DMAbuf_deinit(int dev)
{
struct audio_operations *adev = audio_devs[dev];
/* This routine is called when driver is being unloaded */
if (!adev)
return;
/* Persistent DMA buffers deallocated here */
if (sound_dmap_flag == DMAP_KEEP_ON_CLOSE) {
sound_free_dmap(adev->dmap_out);
if (adev->flags & DMA_DUPLEX)
sound_free_dmap(adev->dmap_in);
}
}
static void close_dmap(struct audio_operations *adev, struct dma_buffparms *dmap)
{
unsigned long flags;
sound_close_dma(dmap->dma);
if (dmap->flags & DMA_BUSY)
dmap->dma_mode = DMODE_NONE;
dmap->flags &= ~DMA_BUSY;
flags=claim_dma_lock();
disable_dma(dmap->dma);
release_dma_lock(flags);
if (sound_dmap_flag == DMAP_FREE_ON_CLOSE)
sound_free_dmap(dmap);
}
