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authorDan Williams <dan.j.williams@intel.com>2019-11-12 17:13:14 -0800
committerDan Williams <dan.j.williams@intel.com>2019-11-19 09:52:12 -0800
commitbfd2e9140656a061138ecdc6a5485d5e2a7a3333 (patch)
tree30a8befd5e91306de97ece49ddce9be822ff933b /drivers/nvdimm
parent153dd28647d63086dc6e1df5ee06fd0a5d6435a5 (diff)
downloadlwn-bfd2e9140656a061138ecdc6a5485d5e2a7a3333.tar.gz
lwn-bfd2e9140656a061138ecdc6a5485d5e2a7a3333.zip
libnvdimm: Simplify root read-only definition for the 'resource' attribute
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
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/namespace_devs.c9
-rw-r--r--drivers/nvdimm/pfn_devs.c10
-rw-r--r--drivers/nvdimm/region_devs.c10
3 files changed, 7 insertions, 22 deletions
diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c
index 05d99a8b3175..032dc61725ff 100644
--- a/drivers/nvdimm/namespace_devs.c
+++ b/drivers/nvdimm/namespace_devs.c
@@ -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)
diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index 17ceac5b5313..b94f7a7e94b8 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -218,7 +218,7 @@ static ssize_t resource_show(struct device *dev,
return rc;
}
-static DEVICE_ATTR_RO(resource);
+static DEVICE_ATTR(resource, 0400, resource_show, NULL);
static ssize_t size_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -269,16 +269,8 @@ static struct attribute *nd_pfn_attributes[] = {
NULL,
};
-static umode_t pfn_visible(struct kobject *kobj, struct attribute *a, int n)
-{
- if (a == &dev_attr_resource.attr)
- return 0400;
- return a->mode;
-}
-
static struct attribute_group nd_pfn_attribute_group = {
.attrs = nd_pfn_attributes,
- .is_visible = pfn_visible,
};
const struct attribute_group *nd_pfn_attribute_groups[] = {
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index 0afc1973e938..be3e429e86af 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -553,7 +553,7 @@ static ssize_t resource_show(struct device *dev,
return sprintf(buf, "%#llx\n", nd_region->ndr_start);
}
-static DEVICE_ATTR_RO(resource);
+static DEVICE_ATTR(resource, 0400, resource_show, NULL);
static ssize_t persistence_domain_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -605,12 +605,8 @@ static umode_t region_visible(struct kobject *kobj, struct attribute *a, int n)
if (!is_memory(dev) && a == &dev_attr_badblocks.attr)
return 0;
- if (a == &dev_attr_resource.attr) {
- if (is_memory(dev))
- return 0400;
- else
- return 0;
- }
+ if (a == &dev_attr_resource.attr && !is_memory(dev))
+ return 0;
if (a == &dev_attr_deep_flush.attr) {
int has_flush = nvdimm_has_flush(nd_region);