[PATCH 17/45] clk: mediatek: Make sure clk_init_data is fully initialized

Geert Uytterhoeven geert+renesas at glider.be
Fri Aug 21 01:53:27 PDT 2026


The clk_init_data structure contains several mutually-exclusive members
for different methods to specify the possible parents of a clock,
prompting drivers to initialize only the members they need.  However,
not initializing all members may cause subtle issues, which are only
exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is
enabled.

Make sure all members are fully initialized, to avoid such bugs, and to
prevent future breakage when converting drivers to a different method
for specifying the parents.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
Compile-tested only.
---
 drivers/clk/mediatek/clk-cpumux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/mediatek/clk-cpumux.c b/drivers/clk/mediatek/clk-cpumux.c
index 412558b9512772cd..9799bc156dccd650 100644
--- a/drivers/clk/mediatek/clk-cpumux.c
+++ b/drivers/clk/mediatek/clk-cpumux.c
@@ -62,9 +62,9 @@ static struct clk_hw *
 mtk_clk_register_cpumux(struct device *dev, const struct mtk_composite *mux,
 			struct regmap *regmap)
 {
+	struct clk_init_data init = {};
 	struct mtk_clk_cpumux *cpumux;
 	int ret;
-	struct clk_init_data init;
 
 	cpumux = kzalloc_obj(*cpumux);
 	if (!cpumux)
-- 
2.43.0




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