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Diffstat (limited to 'drivers/nvdimm/namespace_devs.c')
| -rw-r--r-- | drivers/nvdimm/namespace_devs.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index fef0dd80d4ad..b18ffea9d85b 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -100,6 +100,26 @@ const char *nvdimm_namespace_disk_name(struct nd_namespace_common *ndns, } EXPORT_SYMBOL(nvdimm_namespace_disk_name); +const u8 *nd_dev_to_uuid(struct device *dev) +{ + static const u8 null_uuid[16]; + + if (!dev) + return null_uuid; + + if (is_namespace_pmem(dev)) { + struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev); + + return nspm->uuid; + } else if (is_namespace_blk(dev)) { + struct nd_namespace_blk *nsblk = to_nd_namespace_blk(dev); + + return nsblk->uuid; + } else + return null_uuid; +} +EXPORT_SYMBOL(nd_dev_to_uuid); + static ssize_t nstype_show(struct device *dev, struct device_attribute *attr, char *buf) { |