Patch "clk: mediatek: clk-mt6797: 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-mt6797: 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-mt6797-add-check-for-mtk_alloc_clk_.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 4776c41ff9cf3118fd1cc65e4c1200895c7d5a9c
Author: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
Date:   Tue Sep 12 17:34:05 2023 +0800

    clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
    
    [ Upstream commit 606f6366a35a3329545e38129804d65ef26ed7d2 ]
    
    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@xxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230912093407.21505-3-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-mt6797.c b/drivers/clk/mediatek/clk-mt6797.c
index 2ebd25f0ce71d..f12d4e9ff0bba 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))



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