diff options
| -rw-r--r-- | drivers/nvdimm/namespace_devs.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 9f4188c78120..0e62f46755e7 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -1032,22 +1032,27 @@ static ssize_t size_show(struct device *dev, } static DEVICE_ATTR(size, S_IRUGO, size_show, size_store); -static ssize_t uuid_show(struct device *dev, - struct device_attribute *attr, char *buf) +static u8 *namespace_to_uuid(struct device *dev) { - u8 *uuid; - if (is_namespace_pmem(dev)) { struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev); - uuid = nspm->uuid; + return nspm->uuid; } else if (is_namespace_blk(dev)) { struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev); - uuid = nsblk->uuid; + return nsblk->uuid; } else - return -ENXIO; + return ERR_PTR(-ENXIO); +} + +static ssize_t uuid_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u8 *uuid = namespace_to_uuid(dev); + if (IS_ERR(uuid)) + return PTR_ERR(uuid); if (uuid) return sprintf(buf, "%pUb\n", uuid); return sprintf(buf, "\n"); |