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authorDan Williams <dan.j.williams@intel.com>2009-01-20 01:33:14 +0300
committerDan Williams <dan.j.williams@intel.com>2009-01-20 01:35:54 +0300
commitc50331e8be32eaba5e1949f98c70d50b891262db (patch)
treeb748c607329fd03868226ab4fba234a5702368d9 /include/linux/dmaengine.h
parent83436a0560e9ef8af2f0796264dde4bed1415359 (diff)
downloadlinux-c50331e8be32eaba5e1949f98c70d50b891262db.tar.xz
dmaengine: dma_issue_pending_all == nop when CONFIG_DMA_ENGINE=n
The device list will always be empty in this configuration, so no need to walk the list. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r--include/linux/dmaengine.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 64dea2ab326c..c4a560e72ab7 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -390,11 +390,16 @@ static inline enum dma_status dma_async_is_complete(dma_cookie_t cookie,
enum dma_status dma_sync_wait(struct dma_chan *chan, dma_cookie_t cookie);
#ifdef CONFIG_DMA_ENGINE
enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx);
+void dma_issue_pending_all(void);
#else
static inline enum dma_status dma_wait_for_async_tx(struct dma_async_tx_descriptor *tx)
{
return DMA_SUCCESS;
}
+static inline void dma_issue_pending_all(void)
+{
+ do { } while (0);
+}
#endif
/* --- DMA device --- */
@@ -403,7 +408,6 @@ int dma_async_device_register(struct dma_device *device);
void dma_async_device_unregister(struct dma_device *device);
void dma_run_dependencies(struct dma_async_tx_descriptor *tx);
struct dma_chan *dma_find_channel(enum dma_transaction_type tx_type);
-void dma_issue_pending_all(void);
#define dma_request_channel(mask, x, y) __dma_request_channel(&(mask), x, y)
struct dma_chan *__dma_request_channel(dma_cap_mask_t *mask, dma_filter_fn fn, void *fn_param);
void dma_release_channel(struct dma_chan *chan);