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[2/3] dmaengine: dw: add debug message to dwc_dostart_first_queued

Message ID 1403082938-15119-3-git-send-email-andriy.shevchenko@linux.intel.com (mailing list archive)
State Accepted
Commit cba15617c37c
Delegated to: Vinod Koul
Headers show

Commit Message

Andy Shevchenko June 18, 2014, 9:15 a.m. UTC 
It would be useful to know when the first descriptor in the queue is started
along with its cookie.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/dma/dw/core.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index 5ddf5e4..52815b9 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -281,11 +281,15 @@  static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first)
 
 static void dwc_dostart_first_queued(struct dw_dma_chan *dwc)
 {
+	struct dw_desc *desc;
+
 	if (list_empty(&dwc->queue))
 		return;
 
 	list_move(dwc->queue.next, &dwc->active_list);
-	dwc_dostart(dwc, dwc_first_active(dwc));
+	desc = dwc_first_active(dwc);
+	dev_vdbg(chan2dev(&dwc->chan), "%s: started %u\n", __func__, desc->txd.cookie);
+	dwc_dostart(dwc, desc);
 }
 
 /*----------------------------------------------------------------------*/