diff options
| -rw-r--r-- | drivers/pinctrl/pinctrl-amd.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c index 2b6d996e393e..d14cbc27aa5f 100644 --- a/drivers/pinctrl/pinctrl-amd.c +++ b/drivers/pinctrl/pinctrl-amd.c @@ -30,6 +30,7 @@ #include <linux/pinctrl/pinconf.h> #include <linux/pinctrl/pinconf-generic.h> #include <linux/pinctrl/pinmux.h> +#include <linux/delay.h> #include "core.h" #include "pinctrl-utils.h" @@ -483,6 +484,7 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type) unsigned long flags; struct gpio_chip *gc = irq_data_get_irq_chip_data(d); struct amd_gpio *gpio_dev = gpiochip_get_data(gc); + int timeout = 100; raw_spin_lock_irqsave(&gpio_dev->lock, flags); pin_reg = readl(gpio_dev->base + (d->hwirq)*4); @@ -552,11 +554,16 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type) pin_reg_irq_en |= mask; pin_reg_irq_en &= ~BIT(INTERRUPT_MASK_OFF); writel(pin_reg_irq_en, gpio_dev->base + (d->hwirq)*4); - while ((readl(gpio_dev->base + (d->hwirq)*4) & mask) != mask) - continue; + while (((readl(gpio_dev->base + (d->hwirq)*4) & mask) != mask) && timeout--) + udelay(100); + writel(pin_reg, gpio_dev->base + (d->hwirq)*4); raw_spin_unlock_irqrestore(&gpio_dev->lock, flags); + if (timeout <= 0) + printk("%s: applying Cirrus quirk after timeout when setting irq pin\n", + __func__); + return ret; } |