[PATCH 42/45] clk: x86: Make sure clk_init_data is fully initialized

Geert Uytterhoeven geert+renesas at glider.be
Fri Aug 21 01:53:52 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/x86/clk-pmc-atom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c
index 08c83e0abc41d942..43dda274e329d19e 100644
--- a/drivers/clk/x86/clk-pmc-atom.c
+++ b/drivers/clk/x86/clk-pmc-atom.c
@@ -151,8 +151,8 @@ static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id,
 					const char **parent_names,
 					int num_parents)
 {
+	struct clk_init_data init = {};
 	struct clk_plt *pclk;
-	struct clk_init_data init;
 	int ret;
 
 	pclk = devm_kzalloc(&pdev->dev, sizeof(*pclk), GFP_KERNEL);
-- 
2.43.0




More information about the Linux-mediatek mailing list