[PATCH] dma: ti: edma: Fix PM reference leak on probe failure

[PATCH] dma: ti: edma: Fix PM reference leak on probe failure

[Kery Qi]

The PM reference count is not expected to be incremented on
return in functions edma_probe.

However, pm_runtime_get_sync will increment pm usage counter
even failed. Forgetting to putting operation will result in a
reference leak here.

Replace it with pm_runtime_resume_and_get to keep usage
counter balanced, since the failure path returns without a
matching pm_runtime_put_noidle().

Fixes: 2a03c1314506 ("dmaengine: ti: edma: add missed operations")
Signed-off-by: Kery Qi <qikeyu2017@gmail.com>
---
 drivers/dma/ti/edma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index 552be71db6c4..93171b473151 100644
--- a/drivers/dma/ti/edma.c
+++ b/drivers/dma/ti/edma.c
@@ -2345,9 +2345,9 @@ static int edma_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, ecc);
 
 	pm_runtime_enable(dev);
-	ret = pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret < 0) {
-		dev_err(dev, "pm_runtime_get_sync() failed\n");
+		dev_err(dev, "pm_runtime_resume_and_get() failed\n");
 		pm_runtime_disable(dev);
 		return ret;
 	}
-- 
2.34.1