linux-kernel - [PATCH 5.17 157/343] clk: mediatek: Fix memory leaks on probe

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Date:   Tue, 12 Apr 2022 08:29:35 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        José Expósito <jose.exposito89@...il.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 157/343] clk: mediatek: Fix memory leaks on probe

From: José Expósito <jose.exposito89@...il.com>

[ Upstream commit 7a688c91d3fd54c53e7a9edd6052cdae98dd99d8 ]

Handle the error branches to free memory where required.

Addresses-Coverity-ID: 1491825 ("Resource leak")
Signed-off-by: José Expósito <jose.exposito89@...il.com>
Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
Link: https://lore.kernel.org/r/20220115183059.GA10809@elementary
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/mediatek/clk-mt8192.c | 36 +++++++++++++++++++++++++------
 1 file changed, 30 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8192.c b/drivers/clk/mediatek/clk-mt8192.c
index cbc7c6dbe0f4..79ddb3cc0b98 100644
--- a/drivers/clk/mediatek/clk-mt8192.c
+++ b/drivers/clk/mediatek/clk-mt8192.c
@@ -1236,9 +1236,17 @@ static int clk_mt8192_infra_probe(struct platform_device *pdev)
 
 	r = mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks), clk_data);
 	if (r)
-		return r;
+		goto free_clk_data;
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto free_clk_data;
+
+	return r;
 
-	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+free_clk_data:
+	mtk_free_clk_data(clk_data);
+	return r;
 }
 
 static int clk_mt8192_peri_probe(struct platform_device *pdev)
@@ -1253,9 +1261,17 @@ static int clk_mt8192_peri_probe(struct platform_device *pdev)
 
 	r = mtk_clk_register_gates(node, peri_clks, ARRAY_SIZE(peri_clks), clk_data);
 	if (r)
-		return r;
+		goto free_clk_data;
+
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto free_clk_data;
 
-	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	return r;
+
+free_clk_data:
+	mtk_free_clk_data(clk_data);
+	return r;
 }
 
 static int clk_mt8192_apmixed_probe(struct platform_device *pdev)
@@ -1271,9 +1287,17 @@ static int clk_mt8192_apmixed_probe(struct platform_device *pdev)
 	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
 	r = mtk_clk_register_gates(node, apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
 	if (r)
-		return r;
+		goto free_clk_data;
 
-	return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto free_clk_data;
+
+	return r;
+
+free_clk_data:
+	mtk_free_clk_data(clk_data);
+	return r;
 }
 
 static const struct of_device_id of_match_clk_mt8192[] = {
-- 
2.35.1