From bf0d394e885015941ed2d5724c0a6ed8d42dd95e Mon Sep 17 00:00:00 2001 From: Jeremy Kerr Date: Fri, 11 Sep 2020 09:51:05 +0800 Subject: [PATCH] gpio/aspeed-sgpio: don't enable all interrupts by default Currently, the IRQ setup for the SGPIO driver enables all interrupts in dual-edge trigger mode. Since the default handler is handle_bad_irq, any state change on input GPIOs will trigger bad IRQ warnings. This change applies sensible IRQ defaults: single-edge trigger, and all IRQs disabled. Signed-off-by: Jeremy Kerr Fixes: 7db47faae79b ("gpio: aspeed: Add SGPIO driver") Reviewed-by: Joel Stanley Acked-by: Andrew Jeffery Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpio-aspeed-sgpio.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpio-aspeed-sgpio.c b/drivers/gpio/gpio-aspeed-sgpio.c index 5d678db..a0eb00c 100644 --- a/drivers/gpio/gpio-aspeed-sgpio.c +++ b/drivers/gpio/gpio-aspeed-sgpio.c @@ -452,17 +452,15 @@ static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio, irq->parents = &gpio->irq; irq->num_parents = 1; - /* set IRQ settings and Enable Interrupt */ + /* Apply default IRQ settings */ for (i = 0; i < ARRAY_SIZE(aspeed_sgpio_banks); i++) { bank = &aspeed_sgpio_banks[i]; /* set falling or level-low irq */ iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type0)); /* trigger type is edge */ iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type1)); - /* dual edge trigger mode. */ - iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_type2)); - /* enable irq */ - iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_enable)); + /* single edge trigger */ + iowrite32(0x00000000, bank_reg(gpio, bank, reg_irq_type2)); } return 0; -- 2.7.4