From 1f57f78fbacf630430bf954e5a84caafdfea30c0 Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Tue, 12 Sep 2023 17:34:04 +0800
Subject: [PATCH] clk: mediatek: clk-mt6779: Add check for mtk_alloc_clk_data
Git-commit: 1f57f78fbacf630430bf954e5a84caafdfea30c0
Patch-mainline: v6.7-rc1
References: git-fixes
Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.
Fixes: 710774e04861 ("clk: mediatek: Add MT6779 clock support")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20230912093407.21505-2-jiasheng@iscas.ac.cn
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/clk/mediatek/clk-mt6779.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/clk/mediatek/clk-mt6779.c b/drivers/clk/mediatek/clk-mt6779.c
index 3ee2f5a2319a..ffedb1fe3c67 100644
--- a/drivers/clk/mediatek/clk-mt6779.c
+++ b/drivers/clk/mediatek/clk-mt6779.c
@@ -1217,6 +1217,8 @@ static int clk_mt6779_apmixed_probe(struct platform_device *pdev)
struct device_node *node = pdev->dev.of_node;
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);
@@ -1237,6 +1239,8 @@ static int clk_mt6779_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(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
clk_data);
--
2.35.3