diff options
Diffstat (limited to 'drivers/dma/fsldma.h')
| -rw-r--r-- | drivers/dma/fsldma.h | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h index f2e0c4dcf901..239c20c84382 100644 --- a/drivers/dma/fsldma.h +++ b/drivers/dma/fsldma.h @@ -149,8 +149,21 @@ struct fsldma_chan { char name[8]; /* Channel name */ struct fsldma_chan_regs __iomem *regs; spinlock_t desc_lock; /* Descriptor operation lock */ - struct list_head ld_pending; /* Link descriptors queue */ - struct list_head ld_running; /* Link descriptors queue */ + /* + * Descriptors which are queued to run, but have not yet been + * submitted to the hardware for execution + */ + struct list_head ld_pending; + /* + * Descriptors which are currently being executed by the hardware + */ + struct list_head ld_running; + /* + * Descriptors which have finished execution by the hardware. These + * descriptors have already had their cleanup actions run. They are + * waiting for the ACK bit to be set by the async_tx API. + */ + struct list_head ld_completed; /* Link descriptors queue */ struct dma_chan common; /* DMA common channel */ struct dma_pool *desc_pool; /* Descriptors pool */ struct device *dev; /* Channel device */ |