diff options
| author |   Jeremy Kerr <jk@codeconstruct.com.au> | 2020-09-11 09:51:05 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-07 08:01:28 +0200 |
| commit | f2a2380812c6e295f6fe3169dd53d1dfdf20f659 (patch) | |
| tree | 2779d53fc9aa1504e59f6cc202ded6d104c1acdc | |
| parent | gpio/aspeed-sgpio: enable access to all 80 input & output sgpios (diff) | |
| download | wireguard-linux-f2a2380812c6e295f6fe3169dd53d1dfdf20f659.tar.xz wireguard-linux-f2a2380812c6e295f6fe3169dd53d1dfdf20f659.zip | |
gpio/aspeed-sgpio: don't enable all interrupts by default
[ 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>
| -rw-r--r-- | drivers/gpio/sgpio-aspeed.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/gpio/sgpio-aspeed.c b/drivers/gpio/sgpio-aspeed.c index 7cd86d5e8dc9..3a5dfb8ded1f 100644 --- a/drivers/gpio/sgpio-aspeed.c +++ b/drivers/gpio/sgpio-aspeed.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; |