From cd39cce4cfd499f555eb8b8252636609c3468f57 Mon Sep 17 00:00:00 2001 From: Tomer Maimon Date: Wed, 15 Jul 2026 15:29:19 +0300 Subject: [PATCH] pinctrl: npcm8xx: clear pending GPIO events during init A bank may retain pending event status across resets of the GPIO block. If probe leaves the old state in place, the chained IRQ handler can see spurious events as soon as the irqchip is registered. Disable event generation and clear EVST before wiring each GPIO bank into gpiolib so the driver starts from a known state. Signed-off-by: Tomer Maimon Signed-off-by: Linus Walleij --- drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c index 8d7dfb326b9e..5dcb01923162 100644 --- a/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c +++ b/drivers/pinctrl/nuvoton/pinctrl-npcm8xx.c @@ -2471,6 +2471,9 @@ static int npcm8xx_gpio_fw(struct npcm8xx_pinctrl *pctrl) if (ret < 0) return dev_err_probe(dev, ret, "Failed to retrieve IRQ for bank %u\n", id); + iowrite32(0, pctrl->gpio_bank[id].base + NPCM8XX_GP_N_EVEN); + iowrite32(0xffffffff, pctrl->gpio_bank[id].base + NPCM8XX_GP_N_EVST); + pctrl->gpio_bank[id].irq = ret; pctrl->gpio_bank[id].irq_chip = npcmgpio_irqchip; pctrl->gpio_bank[id].irqbase = id * NPCM8XX_GPIO_PER_BANK;