diff options
| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2023-09-12 12:34:05 +0300 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2023-10-19 04:15:15 +0300 |
| commit | 606f6366a35a3329545e38129804d65ef26ed7d2 (patch) | |
| tree | 413ab01bc4e11946b1c751f67de13cce41f12d8d | |
| parent | 1f57f78fbacf630430bf954e5a84caafdfea30c0 (diff) | |
| download | linux-606f6366a35a3329545e38129804d65ef26ed7d2.tar.xz | |
clk: mediatek: clk-mt6797: 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: 96596aa06628 ("clk: mediatek: add clk support for MT6797")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-3-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
| -rw-r--r-- | drivers/clk/mediatek/clk-mt6797.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt6797.c b/drivers/clk/mediatek/clk-mt6797.c index 2ebd25f0ce71..f12d4e9ff0bb 100644 --- a/drivers/clk/mediatek/clk-mt6797.c +++ b/drivers/clk/mediatek/clk-mt6797.c @@ -390,6 +390,8 @@ 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_factors(top_fixed_divs, ARRAY_SIZE(top_fixed_divs), clk_data); @@ -545,6 +547,8 @@ static void 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); @@ -570,6 +574,8 @@ 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)) |