clk: zynqmp: Make sure clk_init_data is fully initialized

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@glider.be>
Message-ID: <ca5b863571e9e21d123ab95cd5667b19f0d14d96.1787239813.git.geert+renesas@glider.be>
Signed-off-by: Brian Masney <bmasney@redhat.com>

drivers/clk/zynqmp/clk-gate-zynqmp.c

@@ -109,10 +109,10 @@ struct clk_hw *zynqmp_clk_register_gate(const char *name, u32 clk_id,
 					u8 num_parents,
 					const struct clock_topology *nodes)
 {
+	struct clk_init_data init = {};
 	struct zynqmp_clk_gate *gate;
 	struct clk_hw *hw;
 	int ret;
-	struct clk_init_data init;
 
 	/* allocate the gate */
 	gate = kzalloc_obj(*gate);

drivers/clk/zynqmp/clk-mux-zynqmp.c

@@ -133,9 +133,9 @@ struct clk_hw *zynqmp_clk_register_mux(const char *name, u32 clk_id,
 				       u8 num_parents,
 				       const struct clock_topology *nodes)
 {
+	struct clk_init_data init = {};
 	struct zynqmp_clk_mux *mux;
 	struct clk_hw *hw;
-	struct clk_init_data init;
 	int ret;
 
 	mux = kzalloc_obj(*mux);

drivers/clk/zynqmp/divider.c

@@ -278,9 +278,9 @@ struct clk_hw *zynqmp_clk_register_divider(const char *name,
 					   u8 num_parents,
 					   const struct clock_topology *nodes)
 {
+	struct clk_init_data init = {};
 	struct zynqmp_clk_divider *div;
 	struct clk_hw *hw;
-	struct clk_init_data init;
 	int ret;
 
 	/* allocate the divider */

drivers/clk/zynqmp/pll.c

@@ -313,9 +313,9 @@ struct clk_hw *zynqmp_clk_register_pll(const char *name, u32 clk_id,
 				       u8 num_parents,
 				       const struct clock_topology *nodes)
 {
+	struct clk_init_data init = {};
 	struct zynqmp_pll *pll;
 	struct clk_hw *hw;
-	struct clk_init_data init;
 	int ret;
 
 	init.name = name;