From: Zhang Shurong <zhang_shurong@foxmail.com>
Date: Thu, 5 Oct 2023 14:28:35 +0000 (+0800)
Subject: dmaengine: ste_dma40: Fix PM disable depth imbalance in d40_probe
X-Git-Tag: v4.14.329~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b6a41708d0c95fcd28f776d12fd3657c5c57ce1;p=thirdparty%2Fkernel%2Fstable.git

dmaengine: ste_dma40: Fix PM disable depth imbalance in d40_probe

[ 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@foxmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/tencent_DD2D371DB5925B4B602B1E1D0A5FA88F1208@qq.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

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);