This is a note to let you know that I've just added the patch titled
clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clk-mediatek-clk-mt7629-eth-add-check-for-mtk_alloc_.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f593fb8781c1d685c46e741e5b3451506f4cb4f7
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date: Tue Sep 12 17:34:06 2023 +0800
clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
[ Upstream commit 0884393c63cc9a1772f7121a6645ba7bd76feeb9 ]
Add the check for the return value of mtk_alloc_clk_data() in order to
avoid NULL pointer dereference.
Fixes: 3b5e748615e7 ("clk: mediatek: add clock support for MT7629 SoC")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230912093407.21505-4-jiasheng@xxxxxxxxxxx
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/mediatek/clk-mt7629-eth.c b/drivers/clk/mediatek/clk-mt7629-eth.c
index fe714debdc9ec..1bfedc988cfe8 100644
--- a/drivers/clk/mediatek/clk-mt7629-eth.c
+++ b/drivers/clk/mediatek/clk-mt7629-eth.c
@@ -77,6 +77,8 @@ static int clk_mt7629_ethsys_init(struct platform_device *pdev)
int r;
clk_data = mtk_alloc_clk_data(CLK_ETH_NR_CLK);
+ if (!clk_data)
+ return -ENOMEM;
mtk_clk_register_gates(&pdev->dev, node, eth_clks,
CLK_ETH_NR_CLK, clk_data);
@@ -100,6 +102,8 @@ static int clk_mt7629_sgmiisys_init(struct platform_device *pdev)
int r;
clk_data = mtk_alloc_clk_data(CLK_SGMII_NR_CLK);
+ if (!clk_data)
+ return -ENOMEM;
mtk_clk_register_gates(&pdev->dev, node, sgmii_clks[id++],
CLK_SGMII_NR_CLK, clk_data);
