From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter.griffin@linaro.org (Peter Griffin) Date: Tue, 7 Jun 2016 18:38:39 +0100 Subject: [PATCH 6/8] dmaengine: sun6i-dma: Only calculate residue if state exists. In-Reply-To: <1465321121-22238-1-git-send-email-peter.griffin@linaro.org> References: <1465321121-22238-1-git-send-email-peter.griffin@linaro.org> Message-ID: <1465321121-22238-7-git-send-email-peter.griffin@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org There is no point in calculating the residue if state does not exist to store the value. Signed-off-by: Peter Griffin --- drivers/dma/sun6i-dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 5065ca4..3835fcd 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -865,7 +865,7 @@ static enum dma_status sun6i_dma_tx_status(struct dma_chan *chan, size_t bytes = 0; ret = dma_cookie_status(chan, cookie, state); - if (ret == DMA_COMPLETE) + if (ret == DMA_COMPLETE || !state) return ret; spin_lock_irqsave(&vchan->vc.lock, flags); -- 1.9.1