[PATCH AUTOSEL 4.14 4/7] dmaengine: ste_dma40: Fix PM disable depth imbalance in d40_probe

[Sasha Levin]

From: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>

[ Upstream commit 0618c077a8c20e8c81e367988f70f7e32bb5a717 ]

The pm_runtime_enable will increase power disable depth. Thus
a pairing decrement is needed on the error handling path to
keep it balanced according to context.
We fix it by calling pm_runtime_disable when error returns.

Signed-off-by: Zhang Shurong <zhang_shurong@xxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Link: https://lore.kernel.org/r/tencent_DD2D371DB5925B4B602B1E1D0A5FA88F1208@xxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/dma/ste_dma40.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 498d9886ed9bc..bb39b04d67d71 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -3678,6 +3678,7 @@ static int __init d40_probe(struct platform_device *pdev)
 		regulator_disable(base->lcpa_regulator);
 		regulator_put(base->lcpa_regulator);
 	}
+	pm_runtime_disable(base->dev);
 
 	kfree(base->lcla_pool.alloc_map);
 	kfree(base->lookup_log_chans);
-- 
2.40.1