diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8e0564c50840..8ad679a928b0 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -56,8 +56,10 @@ static DEFINE_IDA(gpio_ida); static dev_t gpio_devt; #define GPIO_DEV_MAX 256 /* 256 GPIO chip devices supported */ +static int gpio_bus_match(struct device *dev, struct device_driver *drv); static struct bus_type gpio_bus_type = { .name = "gpio", + .match = gpio_bus_match, }; /* @@ -4199,6 +4201,18 @@ void gpiod_put_array(struct gpio_descs *descs) } EXPORT_SYMBOL_GPL(gpiod_put_array); + +static int gpio_bus_match(struct device *dev, struct device_driver *drv) +{ + /* + * Only match if the fwnode doesn't already have a proper struct device + * created for it. + */ + if (dev->fwnode && dev->fwnode->dev != dev) + return 0; + return 1; +} + static int gpio_stub_drv_probe(struct device *dev) { /* |