From 95b0aa3e10b08b9ee20b5f5e19d162d049744a9b Mon Sep 17 00:00:00 2001 From: Peter Griffin Date: Tue, 7 Jun 2016 18:38:36 +0100 Subject: [PATCH] dmaengine: coh901318: Only calculate residue if txstate exists. There is no point in calculating the residue if there is no txstate to store the value. Signed-off-by: Peter Griffin Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- drivers/dma/coh901318.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/coh901318.c b/drivers/dma/coh901318.c index c340ca9bd2b5..c1006165cea8 100644 --- a/drivers/dma/coh901318.c +++ b/drivers/dma/coh901318.c @@ -2422,7 +2422,7 @@ coh901318_tx_status(struct dma_chan *chan, dma_cookie_t cookie, enum dma_status ret; ret = dma_cookie_status(chan, cookie, txstate); - if (ret == DMA_COMPLETE) + if (ret == DMA_COMPLETE || !txstate) return ret; dma_set_residue(txstate, coh901318_get_bytes_left(chan)); -- 2.20.1