From f0579c8ceaf18adf1eca8b4404f9caac37208655 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Tue, 17 Nov 2015 18:00:30 +0200 Subject: dmaengine: hsu: speed up residue calculation There is no need to calculate an overall length of the descriptor each time we call for DMA transfer status. Instead we do this at descriptor allocation stage and keep the stored length for further usage. Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul --- drivers/dma/hsu/hsu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/dma/hsu/hsu.h') diff --git a/drivers/dma/hsu/hsu.h b/drivers/dma/hsu/hsu.h index f06579c6d548..578a8ee8cd05 100644 --- a/drivers/dma/hsu/hsu.h +++ b/drivers/dma/hsu/hsu.h @@ -65,6 +65,7 @@ struct hsu_dma_desc { enum dma_transfer_direction direction; struct hsu_dma_sg *sg; unsigned int nents; + size_t length; unsigned int active; enum dma_status status; }; -- cgit v1.2.3