linux-kernel - [PATCH] driver core: Add missing pm_runtime_put

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Message-Id: <1642418862-5868-1-git-send-email-lyz_cs@pku.edu.cn>
Date:   Mon, 17 Jan 2022 03:27:42 -0800
From:   Yongzhi Liu <lyz_cs@....edu.cn>
To:     gregkh@...uxfoundation.org, rafael@...nel.org
Cc:     linux-kernel@...r.kernel.org, lyz_cs@....edu.cn
Subject: [PATCH] driver core: Add missing pm_runtime_put_noidle

pm_runtime_get_noresume() in device_shutdown increments the
runtime PM usage counter, thus a matching decrement is needed
to keep the counter balanced.

Signed-off-by: Yongzhi Liu <lyz_cs@....edu.cn>
---
 drivers/base/core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 7bb957b..d41be8a 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -4533,6 +4533,8 @@ void device_shutdown(void)
 			dev->driver->shutdown(dev);
 		}
 
+		pm_runtime_put_noidle(dev);
+
 		device_unlock(dev);
 		if (parent)
 			device_unlock(parent);
-- 
2.7.4