[PATCH 6.1 103/379] clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data

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6.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>

[ Upstream commit 2befa515c1bb6cdd33c262b909d93d1973a219aa ]

Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.

Fixes: 3b5e748615e7 ("clk: mediatek: add clock support for MT7629 SoC")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230912093407.21505-5-jiasheng@xxxxxxxxxxx
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/clk/mediatek/clk-mt7629.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mt7629.c b/drivers/clk/mediatek/clk-mt7629.c
index 0bc88b7d171b5..01ee45fcd7e34 100644
--- a/drivers/clk/mediatek/clk-mt7629.c
+++ b/drivers/clk/mediatek/clk-mt7629.c
@@ -557,6 +557,8 @@ static int mtk_topckgen_init(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
 				    clk_data);
@@ -580,6 +582,8 @@ static int mtk_infrasys_init(struct platform_device *pdev)
 	struct clk_hw_onecell_data *clk_data;
 
 	clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks),
 			       clk_data);
@@ -603,6 +607,8 @@ static int mtk_pericfg_init(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	clk_data = mtk_alloc_clk_data(CLK_PERI_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_gates(node, peri_clks, ARRAY_SIZE(peri_clks),
 			       clk_data);
-- 
2.42.0






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