Patch "ASoC: rockchip: Fix a reference count leak." has been added to the 5.7-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    ASoC: rockchip: Fix a reference count leak.

to the 5.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-rockchip-fix-a-reference-count-leak.patch
and it can be found in the queue-5.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b7fbd4131ce7cf0bbf11a22da501ae7259f190d0
Author: Qiushi Wu <wu000273@xxxxxxx>
Date:   Sat Jun 13 15:51:58 2020 -0500

    ASoC: rockchip: Fix a reference count leak.
    
    [ Upstream commit f141a422159a199f4c8dedb7e0df55b3b2cf16cd ]
    
    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.
    
    Fixes: fc05a5b22253 ("ASoC: rockchip: add support for pdm controller")
    Signed-off-by: Qiushi Wu <wu000273@xxxxxxx>
    Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
    Link: https://lore.kernel.org/r/20200613205158.27296-1-wu000273@xxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/sound/soc/rockchip/rockchip_pdm.c b/sound/soc/rockchip/rockchip_pdm.c
index 7cd42fcfcf38a..1707414cfa921 100644
--- a/sound/soc/rockchip/rockchip_pdm.c
+++ b/sound/soc/rockchip/rockchip_pdm.c
@@ -590,8 +590,10 @@ static int rockchip_pdm_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(pdm->regmap);