Messages in this thread Patch in this message | | | From | Jiasheng Jiang <> | Subject | [PATCH] clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data | Date | Fri, 1 Sep 2023 10:46:58 +0800 |
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Add the check for the return value of mtk_alloc_clk_data() in order to avoid NULL pointer dereference.
Fixes: e9862118272a ("clk: mediatek: Add MT2701 clock support") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> --- drivers/clk/mediatek/clk-mt2701.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/clk/mediatek/clk-mt2701.c b/drivers/clk/mediatek/clk-mt2701.c index c81f3e33ce56..12d9560eb4ba 100644 --- a/drivers/clk/mediatek/clk-mt2701.c +++ b/drivers/clk/mediatek/clk-mt2701.c @@ -667,6 +667,8 @@ static int mtk_topckgen_init(struct platform_device *pdev) return PTR_ERR(base); clk_data = mtk_alloc_clk_data(CLK_TOP_NR); + if (!clk_data) + return -ENOMEM; mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), clk_data); @@ -747,6 +749,8 @@ static void __init mtk_infrasys_init_early(struct device_node *node) if (!infra_clk_data) { infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR); + if (!infra_clk_data) + return; for (i = 0; i < CLK_INFRA_NR; i++) infra_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER); @@ -774,6 +778,8 @@ static int mtk_infrasys_init(struct platform_device *pdev) if (!infra_clk_data) { infra_clk_data = mtk_alloc_clk_data(CLK_INFRA_NR); + if (!infra_clk_data) + return -ENOMEM; } else { for (i = 0; i < CLK_INFRA_NR; i++) { if (infra_clk_data->hws[i] == ERR_PTR(-EPROBE_DEFER)) @@ -890,6 +896,8 @@ static int mtk_pericfg_init(struct platform_device *pdev) return PTR_ERR(base); clk_data = mtk_alloc_clk_data(CLK_PERI_NR); + if (!clk_data) + return -ENOMEM; mtk_clk_register_gates(&pdev->dev, node, peri_clks, ARRAY_SIZE(peri_clks), clk_data); -- 2.25.1
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