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Subject[PATCH] dmaengine: tegra210-adma: Fix runtime PM imbalance on error
Date
pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
---
drivers/dma/tegra210-adma.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c
index c4ce5dfb149b..803e1f4d5dac 100644
--- a/drivers/dma/tegra210-adma.c
+++ b/drivers/dma/tegra210-adma.c
@@ -658,6 +658,7 @@ static int tegra_adma_alloc_chan_resources(struct dma_chan *dc)

ret = pm_runtime_get_sync(tdc2dev(tdc));
if (ret < 0) {
+ pm_runtime_put_sync(tdc2dev(tdc));
free_irq(tdc->irq, tdc);
return ret;
}
--
2.17.1
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