Messages in this thread Patch in this message | | | From | Joel Fernandes <> | Subject | [PATCH v3 12/12] dma: edma: Return if nothing left todo in edma_execute | Date | Mon, 5 Aug 2013 11:14:57 -0500 |
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It is possible edma_execute is called even when all the SG elements have been submitted for transmission, we add a check for the same and avoid executing the rest of the function.
Signed-off-by: Joel Fernandes <joelf@ti.com> --- drivers/dma/edma.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index eca1b47..62987fc 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -168,6 +168,9 @@ static void edma_execute(struct edma_chan *echan) total_left = edesc->pset_nr - edesc->total_processed; total_link_set = total_left > MAX_NR_LS ? MAX_NR_LS : total_left; + if (!total_left) + return; + /* First time, setup 2 cyclically linked sets, each containing half the slots allocated for this channel */ if (edesc->total_processed == 0) { -- 1.7.9.5
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