[PATCH treewide 2/5] clk: visconti: Make sure clk_init_data is fully initialized

[Geert Uytterhoeven]

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.

visconti_clk_register_gate() fills in init.parent_data, and assumes that
init.parent_names is NULL.  However, the latter in uninitialized, and
thus may cause a crash.

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

Fixes: b4cbe606dc3674b2 ("clk: visconti: Add support common clock driver and reset driver")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Compile-tested only.
---
 drivers/clk/visconti/clkc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/visconti/clkc.c b/drivers/clk/visconti/clkc.c
index d0b193b5d0b35f94..4018d1298880dfbb 100644
--- a/drivers/clk/visconti/clkc.c
+++ b/drivers/clk/visconti/clkc.c
@@ -81,9 +81,9 @@ static struct clk_hw *visconti_clk_register_gate(struct device *dev,
 						 u8	rs_idx,
 						 spinlock_t *lock)
 {
+	struct clk_init_data init = {};
 	struct visconti_clk_gate *gate;
 	struct clk_parent_data *pdata;
-	struct clk_init_data init;
 	struct clk_hw *hw;
 	int ret;
 
-- 
2.43.0