[PATCH] dmaengine: tegra210-adma: Fix runtime PM imbalance on error

[Dinghao Liu]

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....@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