diff mbox

[5/8] dmaengine: ste_dma40: Only calculate residue if txstate exists.

Message ID 1465321121-22238-6-git-send-email-peter.griffin@linaro.org
State Accepted
Commit a90e56e5b1779836132645e3352c7d5b60cddca8
Headers show

Commit Message

Peter Griffin June 7, 2016, 5:38 p.m. UTC 
There is no point calculating the residue if there is
no txstate to store the value.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>

---
 drivers/dma/ste_dma40.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
1.9.1

Comments

Linus Walleij June 8, 2016, 12:15 p.m. UTC | #1 
On Tue, Jun 7, 2016 at 7:38 PM, Peter Griffin <peter.griffin@linaro.org> wrote:

> There is no point calculating the residue if there is

> no txstate to store the value.

>

> Signed-off-by: Peter Griffin <peter.griffin@linaro.org>


Acked-by: Linus Walleij <linus.walleij@linaro.org>


Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 6fb8307..378cc47 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2588,7 +2588,7 @@  static enum dma_status d40_tx_status(struct dma_chan *chan,
 	}
 
 	ret = dma_cookie_status(chan, cookie, txstate);
-	if (ret != DMA_COMPLETE)
+	if (ret != DMA_COMPLETE && txstate)
 		dma_set_residue(txstate, stedma40_residue(chan));
 
 	if (d40_is_paused(d40c))