From: Qiushi Wu <wu000273@umn.edu>
Date: Sat, 13 Jun 2020 20:44:19 +0000 (-0500)
Subject: ASoC: tegra: Fix reference count leaks.
X-Git-Tag: v4.9.235~71
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ed7edd4264c385a833fe985f11ce21c14faef35e;p=platform%2Fkernel%2Flinux-amlogic.git

ASoC: tegra: Fix reference count leaks.

[ Upstream commit deca195383a6085be62cb453079e03e04d618d6e ]

Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count if pm_runtime_put is not called in
error handling paths. Call pm_runtime_put if pm_runtime_get_sync fails.

Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20200613204422.24484-1-wu000273@umn.edu
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index fef3b9a21a66..e441e23a37e4 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -656,8 +656,10 @@ static int tegra30_ahub_resume(struct device *dev)
 	int ret;
 
 	ret = pm_runtime_get_sync(dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put(dev);
 		return ret;
+	}
 	ret = regcache_sync(ahub->regmap_ahub);
 	ret |= regcache_sync(ahub->regmap_apbif);
 	pm_runtime_put(dev);
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 8e55583aa104..516f37896092 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -552,8 +552,10 @@ static int tegra30_i2s_resume(struct device *dev)
 	int ret;
 
 	ret = pm_runtime_get_sync(dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put(dev);
 		return ret;
+	}
 	ret = regcache_sync(i2s->regmap);
 	pm_runtime_put(dev);