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Subject[PATCH] dmaengine: tegra210-adma: handle pm_runtime_get_sync failure cases
Date
Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count. Call pm_runtime_put if
pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
drivers/dma/tegra210-adma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
index c4ce5dfb149b..899eaaf9fc48 100644
--- a/drivers/dma/tegra210-adma.c
+++ b/drivers/dma/tegra210-adma.c
@@ -659,6 +659,7 @@ static int tegra_adma_alloc_chan_resources(struct dma_chan *dc)
ret = pm_runtime_get_sync(tdc2dev(tdc));
if (ret < 0) {
free_irq(tdc->irq, tdc);
+ pm_runtime_put(tdc2dev(tdc));
return ret;
}

@@ -870,7 +871,7 @@ static int tegra_adma_probe(struct platform_device *pdev)

ret = pm_runtime_get_sync(&pdev->dev);
if (ret < 0)
- goto rpm_disable;
+ goto rpm_put;

ret = tegra_adma_init(tdma);
if (ret)
--
2.17.1
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