diff options
Diffstat (limited to 'drivers/gpio/gpiolib-sysfs.c')
| -rw-r--r-- | drivers/gpio/gpiolib-sysfs.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index c56309491e8b..932e510aec50 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -721,6 +721,7 @@ EXPORT_SYMBOL_GPL(gpiod_unexport); int gpiochip_sysfs_register(struct gpio_device *gdev) { struct device *dev; + struct device *parent; struct gpio_chip *chip = gdev->chip; /* @@ -732,8 +733,17 @@ int gpiochip_sysfs_register(struct gpio_device *gdev) if (!gpio_class.p) return 0; + /* + * For sysfs backward compatibility we need to preserve this + * preferred parenting to the gpio_chip parent field, if set. + */ + if (chip->parent) + parent = chip->parent; + else + parent = &gdev->dev; + /* use chip->base for the ID; it's already known to be unique */ - dev = device_create_with_groups(&gpio_class, &gdev->dev, + dev = device_create_with_groups(&gpio_class, parent, MKDEV(0, 0), chip, gpiochip_groups, "gpiochip%d", chip->base); |