linux-kernel - [PATCH] platform/x86: intel_pmc_core: fix memleak on registration failure

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Date:   Wed, 22 Dec 2021 11:50:23 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
        David E Box <david.e.box@...el.com>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>, stable@...r.kernel.org
Subject: [PATCH] platform/x86: intel_pmc_core: fix memleak on registration failure

In case device registration fails during module initialisation, the
platform device structure needs to be freed using platform_device_put()
to properly free all resources (e.g. the device name).

Fixes: 938835aa903a ("platform/x86: intel_pmc_core: do not create a static struct device")
Cc: stable@...r.kernel.org      # 5.9
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/platform/x86/intel/pmc/pltdrv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/intel/pmc/pltdrv.c b/drivers/platform/x86/intel/pmc/pltdrv.c
index 73797680b895..15ca8afdd973 100644
--- a/drivers/platform/x86/intel/pmc/pltdrv.c
+++ b/drivers/platform/x86/intel/pmc/pltdrv.c
@@ -65,7 +65,7 @@ static int __init pmc_core_platform_init(void)
 
 	retval = platform_device_register(pmc_core_device);
 	if (retval)
-		kfree(pmc_core_device);
+		platform_device_put(pmc_core_device);
 
 	return retval;
 }
-- 
2.32.0