From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> After recent changes, pinctrl-amd will not support hibernation when CONFIG_HIBERNATION is set and CONFIG_SUSPEND isn't because it will not register amd_gpio_pm_ops then. Address this by restoring dependencies on CONFIG_PM_SLEEP where necessary for hibernation support. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> --- Mario, this is on top of: https://patchwork.kernel.org/project/linux-acpi/patch/20250414203551.779320-1-superm1@xxxxxxxxxx/ which is currently in my bleeding-edge branch only. --- drivers/pinctrl/pinctrl-amd.c | 63 ++++++++++++++++++++++++------------------ 1 file changed, 36 insertions(+), 27 deletions(-) --- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -894,26 +894,7 @@ } } -#ifdef CONFIG_SUSPEND -static bool amd_gpio_should_save(struct amd_gpio *gpio_dev, unsigned int pin) -{ - const struct pin_desc *pd = pin_desc_get(gpio_dev->pctrl, pin); - - if (!pd) - return false; - - /* - * Only restore the pin if it is actually in use by the kernel (or - * by userspace). - */ - if (pd->mux_owner || pd->gpio_owner || - gpiochip_line_is_irq(&gpio_dev->gc, pin)) - return true; - - return false; -} - -#ifdef CONFIG_ACPI +#if defined(CONFIG_SUSPEND) && defined(CONFIG_ACPI) static void amd_gpio_check_pending(void) { struct amd_gpio *gpio_dev = pinctrl_dev; @@ -936,8 +917,40 @@ static struct acpi_s2idle_dev_ops pinctrl_amd_s2idle_dev_ops = { .check = amd_gpio_check_pending, }; + +static void amd_gpio_register_s2idle_ops(void) +{ + acpi_register_lps0_dev(&pinctrl_amd_s2idle_dev_ops); +} + +static void amd_gpio_unregister_s2idle_ops(void) +{ + acpi_unregister_lps0_dev(&pinctrl_amd_s2idle_dev_ops); +} +#else +static inline void amd_gpio_register_s2idle_ops(void) {} +static inline void amd_gpio_unregister_s2idle_ops(void) {} #endif +#ifdef CONFIG_PM_SLEEP +static bool amd_gpio_should_save(struct amd_gpio *gpio_dev, unsigned int pin) +{ + const struct pin_desc *pd = pin_desc_get(gpio_dev->pctrl, pin); + + if (!pd) + return false; + + /* + * Only restore the pin if it is actually in use by the kernel (or + * by userspace). + */ + if (pd->mux_owner || pd->gpio_owner || + gpiochip_line_is_irq(&gpio_dev->gc, pin)) + return true; + + return false; +} + static int amd_gpio_suspend_hibernate_common(struct device *dev, bool is_suspend) { struct amd_gpio *gpio_dev = dev_get_drvdata(dev); @@ -1211,9 +1224,7 @@ platform_set_drvdata(pdev, gpio_dev); acpi_register_wakeup_handler(gpio_dev->irq, amd_gpio_check_wake, gpio_dev); -#if defined(CONFIG_ACPI) && defined(CONFIG_SUSPEND) - acpi_register_lps0_dev(&pinctrl_amd_s2idle_dev_ops); -#endif + amd_gpio_register_s2idle_ops(); dev_dbg(&pdev->dev, "amd gpio driver loaded\n"); return ret; @@ -1232,9 +1243,7 @@ gpiochip_remove(&gpio_dev->gc); acpi_unregister_wakeup_handler(amd_gpio_check_wake, gpio_dev); -#if defined(CONFIG_ACPI) && defined(CONFIG_SUSPEND) - acpi_unregister_lps0_dev(&pinctrl_amd_s2idle_dev_ops); -#endif + amd_gpio_unregister_s2idle_ops(); } #ifdef CONFIG_ACPI @@ -1251,7 +1260,7 @@ .driver = { .name = "amd_gpio", .acpi_match_table = ACPI_PTR(amd_gpio_acpi_match), -#ifdef CONFIG_SUSPEND +#ifdef CONFIG_PM_SLEEP .pm = &amd_gpio_pm_ops, #endif },
