diff options
| -rw-r--r-- | drivers/staging/greybus/hd.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/staging/greybus/hd.c b/drivers/staging/greybus/hd.c index 762cc03..2863472 100644 --- a/drivers/staging/greybus/hd.c +++ b/drivers/staging/greybus/hd.c @@ -24,6 +24,21 @@ int gb_hd_output(struct gb_host_device *hd, void *req, u16 size, u8 cmd, } EXPORT_SYMBOL_GPL(gb_hd_output); +static ssize_t bus_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gb_host_device *hd = to_gb_host_device(dev); + + return sprintf(buf, "%d\n", hd->bus_id); +} +static DEVICE_ATTR_RO(bus_id); + +static struct attribute *bus_attrs[] = { + &dev_attr_bus_id.attr, + NULL +}; +ATTRIBUTE_GROUPS(bus); + static void gb_hd_release(struct device *dev) { struct gb_host_device *hd = to_gb_host_device(dev); @@ -98,6 +113,7 @@ struct gb_host_device *gb_hd_create(struct gb_hd_driver *driver, hd->dev.parent = parent; hd->dev.bus = &greybus_bus_type; hd->dev.type = &greybus_hd_type; + hd->dev.groups = bus_groups; hd->dev.dma_mask = hd->dev.parent->dma_mask; device_initialize(&hd->dev); dev_set_name(&hd->dev, "greybus%d", hd->bus_id); |
