nvdimm: do not show pfn_seed for non pmem regions

Orabug: 22913653

This simple change hides pfn_seed attribute for non pmem
regions because they don't support pfn anyway.

Signed-off-by: Dmitry V. Krivenok <krivenok.dmitry@gmail.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit 6bb691ac089c39bb0aa73bdcc21ffd8c846e4ba5)
Signed-off-by: Dan Duval <dan.duval@oracle.com>

diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 529f3f02e7b2d90ee989e88d400aa1bb4f5f0500..3d730d1f25db5aa771d5d3282fed3167f4aaf503 100644 (file)
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -406,6 +406,9 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
        struct nd_interleave_set *nd_set = nd_region->nd_set;
        int type = nd_region_to_nstype(nd_region);
 
+       if (!is_nd_pmem(dev) && a == &dev_attr_pfn_seed.attr)
+               return 0;
+
        if (a != &dev_attr_set_cookie.attr
                        && a != &dev_attr_available_size.attr)
                return a->mode;