From: Fabien Dessenne fabien.dessenne@foss.st.com
commit c370bb474016ab9edfdabd7c08a88dd13a71ddbd upstream.
When resuming from low power, the driver attempts to restore the configuration of some pins. This is done by a call to: stm32_pinctrl_restore_gpio_regs(struct stm32_pinctrl *pctl, u32 pin) where 'pin' must be a valid pin value (i.e. matching some 'groups->pin'). Fix the current implementation which uses some wrong 'pin' value.
Fixes: e2f3cf18c3e2 ("pinctrl: stm32: add suspend/resume management") Signed-off-by: Fabien Dessenne fabien.dessenne@foss.st.com Link: https://lore.kernel.org/r/20211008122517.617633-1-fabien.dessenne@foss.st.co... Signed-off-by: Linus Walleij linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pinctrl/stm32/pinctrl-stm32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c +++ b/drivers/pinctrl/stm32/pinctrl-stm32.c @@ -1645,8 +1645,8 @@ int __maybe_unused stm32_pinctrl_resume( struct stm32_pinctrl_group *g = pctl->groups; int i;
- for (i = g->pin; i < g->pin + pctl->ngroups; i++) - stm32_pinctrl_restore_gpio_regs(pctl, i); + for (i = 0; i < pctl->ngroups; i++, g++) + stm32_pinctrl_restore_gpio_regs(pctl, g->pin);
return 0; }