diff options
Diffstat (limited to 'sys/dev/gpio/ofw_gpiobus.c')
| -rw-r--r-- | sys/dev/gpio/ofw_gpiobus.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sys/dev/gpio/ofw_gpiobus.c b/sys/dev/gpio/ofw_gpiobus.c index 6646b7d..1dbb526 100644 --- a/sys/dev/gpio/ofw_gpiobus.c +++ b/sys/dev/gpio/ofw_gpiobus.c @@ -56,6 +56,14 @@ ofw_gpiobus_add_fdt_child(device_t bus, const char *drvname, phandle_t child) struct ofw_gpiobus_devinfo *dinfo; /* + * Check to see if we already have a child for @p child, and if so + * return it. + */ + childdev = ofw_bus_find_child_device_by_phandle(bus, child); + if (childdev != NULL) + return (childdev); + + /* * Set up the GPIO child and OFW bus layer devinfo and add it to bus. */ childdev = device_add_child(bus, drvname, -1); |
