Commit 896196dc authored Mar 21, 2018 by Dan Williams

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: 96c3a239 ("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>

parent dc9e0a93

drivers/nvdimm/region_devs.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -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;