From: Jeremy Kerr jk@codeconstruct.com.au
[ Upstream commit bf0d394e885015941ed2d5724c0a6ed8d42dd95e ]
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 jk@codeconstruct.com.au Fixes: 7db47faae79b ("gpio: aspeed: Add SGPIO driver") Reviewed-by: Joel Stanley joel@jms.id.au Acked-by: Andrew Jeffery andrew@aj.id.au Signed-off-by: Bartosz Golaszewski bgolaszewski@baylibre.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 5d678dbf1a621..a0eb00c024f62 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;