Patch "clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data" has been added to the 6.6-stable tree

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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);



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