From 11a954eebc4396b51af745e5242df05f71be6d9e Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Tue, 4 Aug 2020 08:11:53 +0000
Subject: crypto: ingenic - Drop kfree for memory allocated with devm_kzalloc
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It's not necessary to free memory allocated with devm_kzalloc
and using kfree leads to a double free.
Fixes: 190873a0ea45 ("crypto: ingenic - Add hardware RNG for Ingenic JZ4780 and X1000")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
drivers/char/hw_random/ingenic-rng.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
(limited to 'drivers/char')
diff --git a/drivers/char/hw_random/ingenic-rng.c b/drivers/char/hw_random/ingenic-rng.c
index d704cef64b64..055cfe59f519 100644
--- a/drivers/char/hw_random/ingenic-rng.c
+++ b/drivers/char/hw_random/ingenic-rng.c
@@ -92,8 +92,7 @@ static int ingenic_rng_probe(struct platform_device *pdev)
priv->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(priv->base)) {
pr_err("%s: Failed to map RNG registers\n", __func__);
- ret = PTR_ERR(priv->base);
- goto err_free_rng;
+ return PTR_ERR(priv->base);
}
priv->version = (enum ingenic_rng_version)of_device_get_match_data(&pdev->dev);
@@ -106,17 +105,13 @@ static int ingenic_rng_probe(struct platform_device *pdev)
ret = hwrng_register(&priv->rng);
if (ret) {
dev_err(&pdev->dev, "Failed to register hwrng\n");
- goto err_free_rng;
+ return ret;
}
platform_set_drvdata(pdev, priv);
dev_info(&pdev->dev, "Ingenic RNG driver registered\n");
return 0;
-
-err_free_rng:
- kfree(priv);
- return ret;
}
static int ingenic_rng_remove(struct platform_device *pdev)
--
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