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| author | Dan Williams <dan.j.williams@intel.com> | 2018-03-21 14:06:23 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2018-03-21 14:06:23 -0700 |
| commit | 896196dc4e419a9d0782404e0befac17d638fc01 (patch) | |
| tree | 4508afcf4dc40f6cdfdb4c1c4b0db58f1cb9ce06 /drivers/nvdimm/region_devs.c | |
| parent | dc9e0a9347e932e3fd3cd03e7ff241022ed6ea8a (diff) | |
| download | linux-896196dc4e419a9d0782404e0befac17d638fc01.tar.bz2 | |
libnvdimm, region: hide persistence_domain when unknown
Similar to other region attributes, do not emit the persistence_domain
attribute if its contents are empty.
Fixes: 96c3a239054a ("libnvdimm: expose platform persistence attr...")
Cc: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/region_devs.c')
| -rw-r--r-- | drivers/nvdimm/region_devs.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c index e6d01911e092..a8e9d428c0a5 100644 --- a/drivers/nvdimm/region_devs.c +++ b/drivers/nvdimm/region_devs.c @@ -593,6 +593,13 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n) return 0; } + if (a == &dev_attr_persistence_domain.attr) { + if ((nd_region->flags & (BIT(ND_REGION_PERSIST_CACHE) + | BIT(ND_REGION_PERSIST_MEMCTRL))) == 0) + return 0; + return a->mode; + } + if (a != &dev_attr_set_cookie.attr && a != &dev_attr_available_size.attr) return a->mode; |