linux-kernel - [PATCH 5.15 085/128] platform/x86: intel_pmc_core: fix memleak on registration failure

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Message-Id: <20211227151334.344340883@linuxfoundation.org>
Date:   Mon, 27 Dec 2021 16:31:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Johan Hovold <johan@...nel.org>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH 5.15 085/128] platform/x86: intel_pmc_core: fix memleak on registration failure

From: Johan Hovold <johan@...nel.org>

commit 26a8b09437804fabfb1db080d676b96c0de68e7c upstream.

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>
Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Link: https://lore.kernel.org/r/20211222105023.6205-1-johan@kernel.org
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/platform/x86/intel/pmc/pltdrv.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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
 
 	retval = platform_device_register(pmc_core_device);
 	if (retval)
-		kfree(pmc_core_device);
+		platform_device_put(pmc_core_device);
 
 	return retval;
 }