linux-kernel - [PATCH -next] viper_tpm_init(): fix memleak on registration failure

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Date:   Wed, 14 Sep 2022 11:16:24 +0800
From:   Lin Yujun <linyujun809@...wei.com>
To:     <daniel@...que.org>, <haojian.zhuang@...il.com>,
        <robert.jarzmik@...e.fr>, <linux@...linux.org.uk>,
        <marc.zyngier@...ran.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH -next] viper_tpm_init(): fix memleak on registration failure

In case device registration fails, the platform device
structure needs to be free. Use platform_device_put()
to free all resources instead of using kfree to release
the platform device.

Fixes: 352699a3d7cc ("Basic support for the Arcom/Eurotech Viper SBC.")
Signed-off-by: Lin Yujun <linyujun809@...wei.com>
---
 arch/arm/mach-pxa/viper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c
index 5b43351ee840..44b2c54fb2c7 100644
--- a/arch/arm/mach-pxa/viper.c
+++ b/arch/arm/mach-pxa/viper.c
@@ -829,7 +829,7 @@ static void __init viper_tpm_init(void)
 	return;
 
 error_free_tpm:
-	kfree(tpm_device);
+	platform_device_put(tpm_device);
 error_tpm:
 	pr_err("viper: Couldn't %s, giving up\n", errstr);
 }
-- 
2.17.1