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clk: stm32: Make sure clk_init_data is fully initialized

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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: <0b80535e9cfdc96d43169e5023e3a92a8f2252d6.1787239813.git.geert+renesas@glider.be>
Signed-off-by: Brian Masney <bmasney@redhat.com>
This commit is contained in:
Geert Uytterhoeven 2026-08-21 10:53:44 +02:00 committed by Brian Masney
parent bf79ec1952
commit 605757e177
3 changed files with 5 additions and 5 deletions
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4
drivers/clk/clk-stm32f4.c
View File

@ -485,8 +485,8 @@ static struct clk *clk_register_apb_mul(struct device *dev, const char *name,
const char *parent_name,
unsigned long flags, u8 bit_idx)
{
struct clk_init_data init = {};
struct clk_apb_mul *am;
struct clk_init_data init;
struct clk *clk;
am = kzalloc_obj(*am);
@ -810,8 +810,8 @@ static struct clk_hw *clk_register_pll_div(const char *name,
struct clk_hw *pll_hw, spinlock_t *lock)
{
struct stm32f4_pll_div *pll_div;
struct clk_init_data init = {};
struct clk_hw *hw;
struct clk_init_data init;
int ret;
/* allocate the divider */

2
drivers/clk/clk-stm32h7.c
View File

@ -462,8 +462,8 @@ static struct clk_hw *clk_register_stm32_timer_ker(struct device *dev,
u8 dppre_shift,
spinlock_t *lock)
{
struct clk_init_data init = {};
struct timer_ker *element;
struct clk_init_data init;
struct clk_hw *hw;
int err;

4
drivers/clk/stm32/clk-stm32mp1.c
View File

@ -902,8 +902,8 @@ static struct clk_hw *clk_register_pll(struct device *dev, const char *name,
unsigned long flags,
spinlock_t *lock)
{
struct clk_init_data init = {};
struct stm32_pll_obj *element;
struct clk_init_data init;
struct clk_hw *hw;
int err;
@ -1041,8 +1041,8 @@ static struct clk_hw *clk_register_cktim(struct device *dev, const char *name,
void __iomem *timpre,
spinlock_t *lock)
{
struct clk_init_data init = {};
struct timer_cker *tim_ker;
struct clk_init_data init;
struct clk_hw *hw;
int err;