This is a note to let you know that I've just added the patch titled clk: berlin: Add of_node_put() for of_get_parent() to the 4.19-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-berlin-add-of_node_put-for-of_get_parent.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit fe7c05a2f8bb34c67615ca92491ea61c4a1f3332 Author: Liang He <windhl@xxxxxxx> Date: Fri Jul 8 16:49:00 2022 +0800 clk: berlin: Add of_node_put() for of_get_parent() [ Upstream commit 37c381b812dcbfde9c3f1f3d3e75fdfc1b40d5bc ] In berlin2_clock_setup() and berlin2q_clock_setup(), we need to call of_node_put() for the reference returned by of_get_parent() which has increased the refcount. We should call *_put() in fail path or when it is not used anymore. Fixes: 26b3b6b959b2 ("clk: berlin: prepare simple-mfd conversion") Signed-off-by: Liang He <windhl@xxxxxxx> Link: https://lore.kernel.org/r/20220708084900.311684-1-windhl@xxxxxxx Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/clk/berlin/bg2.c b/drivers/clk/berlin/bg2.c index 0b4b44a2579e..6efc3e02da47 100644 --- a/drivers/clk/berlin/bg2.c +++ b/drivers/clk/berlin/bg2.c @@ -499,12 +499,15 @@ static void __init berlin2_clock_setup(struct device_node *np) int n, ret; clk_data = kzalloc(struct_size(clk_data, hws, MAX_CLKS), GFP_KERNEL); - if (!clk_data) + if (!clk_data) { + of_node_put(parent_np); return; + } clk_data->num = MAX_CLKS; hws = clk_data->hws; gbase = of_iomap(parent_np, 0); + of_node_put(parent_np); if (!gbase) return; diff --git a/drivers/clk/berlin/bg2q.c b/drivers/clk/berlin/bg2q.c index 9b9db743df25..5bcd8406ac93 100644 --- a/drivers/clk/berlin/bg2q.c +++ b/drivers/clk/berlin/bg2q.c @@ -285,19 +285,23 @@ static void __init berlin2q_clock_setup(struct device_node *np) int n, ret; clk_data = kzalloc(struct_size(clk_data, hws, MAX_CLKS), GFP_KERNEL); - if (!clk_data) + if (!clk_data) { + of_node_put(parent_np); return; + } clk_data->num = MAX_CLKS; hws = clk_data->hws; gbase = of_iomap(parent_np, 0); if (!gbase) { + of_node_put(parent_np); pr_err("%pOF: Unable to map global base\n", np); return; } /* BG2Q CPU PLL is not part of global registers */ cpupll_base = of_iomap(parent_np, 1); + of_node_put(parent_np); if (!cpupll_base) { pr_err("%pOF: Unable to map cpupll base\n", np); iounmap(gbase);