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libnvdimm: Simplify root read-only definition for the 'resource' attribute

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Rather than update the permission in ->is_visible() set the permission
directly at declaration time.

Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/157309905534.1582359.13927459228885931097.stgit@dwillia2-desk3.amr.corp.intel.com
This commit is contained in:
Dan Williams
2019-11-12 17:13:14 -08:00
parent 153dd28647
commit bfd2e91406
3 changed files with 7 additions and 22 deletions
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9
drivers/nvdimm/namespace_devs.c
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@@ -1303,7 +1303,7 @@ static ssize_t resource_show(struct device *dev,
return -ENXIO;
return sprintf(buf, "%#llx\n", (unsigned long long) res->start);
}
static DEVICE_ATTR_RO(resource);
static DEVICE_ATTR(resource, 0400, resource_show, NULL);
static const unsigned long blk_lbasize_supported[] = { 512, 520, 528,
4096, 4104, 4160, 4224, 0 };
@@ -1619,11 +1619,8 @@ static umode_t namespace_visible(struct kobject *kobj,
{
struct device *dev = container_of(kobj, struct device, kobj);
if (a == &dev_attr_resource.attr) {
if (is_namespace_blk(dev))
return 0;
return 0400;
}
if (a == &dev_attr_resource.attr && is_namespace_blk(dev))
return 0;
if (is_namespace_pmem(dev) || is_namespace_blk(dev)) {
if (a == &dev_attr_size.attr)