Messages in this thread Patch in this message | | | From | Hal Feng <> | Subject | [PATCH v1 1/2] pinctrl: starfive: jh7110: Fix failure to set irq after CONFIG_PM is enabled | Date | Tue, 5 Sep 2023 20:21:04 +0800 |
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The issue was found when we enabled CONFIG_PM and tested edge events using libgpiod.
> # gpiomon -r gpiochip0 55 > gpiomon: error waiting for events: Permission denied
`gpiomon` will call irq_chip_pm_get() and then call pm_runtime_resume_and_get() if (IS_ENABLED(CONFIG_PM) && sfp->gc.irq.domain->pm_dev). pm_runtime_resume_and_get() will fail if the runtime pm of pinctrl device is disabled.
As we expect the pinctrl driver can be always working and never suspend during runtime, unset sfp->gc.irq.domain->pm_dev to make sure pm_runtime_resume_and_get() won't be called when setting irq.
Fixes: 447976ab62c5 ("pinctrl: starfive: Add StarFive JH7110 sys controller driver") Signed-off-by: Hal Feng <hal.feng@starfivetech.com> --- drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c index 5fe729b4a03d..72747ad497b5 100644 --- a/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c +++ b/drivers/pinctrl/starfive/pinctrl-starfive-jh7110.c @@ -968,8 +968,6 @@ int jh7110_pinctrl_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "could not register gpiochip\n"); - irq_domain_set_pm_device(sfp->gc.irq.domain, dev); - dev_info(dev, "StarFive GPIO chip registered %d GPIOs\n", sfp->gc.ngpio); return pinctrl_enable(sfp->pctl); -- 2.38.1
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