linux-kernel - [PATCH 1/3] PM / Domains: Don't kfree() the virtual device in the error path

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Date:   Thu, 18 Apr 2019 12:27:55 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>, linux-pm@...r.kernel.org
Cc:     Ulf Hansson <ulf.hansson@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jon Hunter <jonathanh@...dia.com>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Niklas Cassel <niklas.cassel@...aro.org>,
        Kevin Hilman <khilman@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 1/3] PM / Domains: Don't kfree() the virtual device in the error path

It's not correct to call kfree(dev) when device_register(dev) has failed.
Fix this by calling put_device(dev) instead.

Fixes: 3c095f32a92b ("PM / Domains: Add support for multi PM domains per device to genpd")
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
 drivers/base/power/domain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index ecac03dcc9b2..7fec69aebf46 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -2528,7 +2528,7 @@ struct device *genpd_dev_pm_attach_by_id(struct device *dev,
 
 	ret = device_register(virt_dev);
 	if (ret) {
-		kfree(virt_dev);
+		put_device(virt_dev);
 		return ERR_PTR(ret);
 	}
 
-- 
2.17.1