diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2023-09-01 04:46:58 +0200 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2023-10-19 03:16:38 +0200 |
| commit | 0d6e24b422a2166a9297a8286ff2e6ab9a5e8cd3 (patch) | |
| tree | 0279d9ebff8bb2dd28ff609346f749ac6e18c4d2 | |
| parent | clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data (diff) | |
| download | linux-0d6e24b422a2166a9297a8286ff2e6ab9a5e8cd3.tar.xz linux-0d6e24b422a2166a9297a8286ff2e6ab9a5e8cd3.zip | |
clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
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>
Link: https://lore.kernel.org/r/20230901024658.23405-1-jiasheng@iscas.ac.cn
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
| -rw-r--r-- | drivers/clk/mediatek/clk-mt2701.c | 8 |
1 files changed, 8 insertions, 0 deletions
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); |