Patch "clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data" has been added to the 5.4-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data

to the 5.4-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-add-check-for-mtk_alloc_clk_.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 35f20c6e760c3bec35ca838919311bb3f96021e4
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date:   Tue Sep 12 17:34:07 2023 +0800

    clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data
    
    [ Upstream commit 2befa515c1bb6cdd33c262b909d93d1973a219aa ]
    
    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/20230912093407.21505-5-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.c b/drivers/clk/mediatek/clk-mt7629.c
index d6233994af5a3..1e6abbddf02c5 100644
--- a/drivers/clk/mediatek/clk-mt7629.c
+++ b/drivers/clk/mediatek/clk-mt7629.c
@@ -581,6 +581,8 @@ static int mtk_topckgen_init(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);
@@ -605,6 +607,8 @@ static int mtk_infrasys_init(struct platform_device *pdev)
 	int r;
 
 	clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks),
 			       clk_data);
@@ -633,6 +637,8 @@ static int mtk_pericfg_init(struct platform_device *pdev)
 		return PTR_ERR(base);
 
 	clk_data = mtk_alloc_clk_data(CLK_PERI_NR_CLK);
+	if (!clk_data)
+		return -ENOMEM;
 
 	mtk_clk_register_gates(node, peri_clks, ARRAY_SIZE(peri_clks),
 			       clk_data);