[PATCH 1/5] clk: mediatek: clk-mt6765: Add check for mtk_alloc_clk_data

[Jiasheng Jiang]

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

Fixes: 1aca9939bf72 ("clk: mediatek: Add MT6765 clock support")
Signed-off-by: Jiasheng Jiang <jiasheng at iscas.ac.cn>
---
 drivers/clk/mediatek/clk-mt6765.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/clk/mediatek/clk-mt6765.c b/drivers/clk/mediatek/clk-mt6765.c
index 1f4c8d0c041a..9c7f7407d798 100644
--- a/drivers/clk/mediatek/clk-mt6765.c
+++ b/drivers/clk/mediatek/clk-mt6765.c
@@ -737,6 +737,8 @@ static int clk_mt6765_apmixed_probe(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
 
@@ -769,6 +771,8 @@ static int clk_mt6765_top_probe(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(fixed_clks, ARRAY_SIZE(fixed_clks),
 				    clk_data);
@@ -807,6 +811,8 @@ static int clk_mt6765_ifr_probe(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	clk_data = mtk_alloc_clk_data(CLK_IFR_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_gates(&pdev->dev, node, ifr_clks,
 			       ARRAY_SIZE(ifr_clks), clk_data);
-- 
2.25.1