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Subject[PATCH 06/16] libnvdimm: Move nd_mapping_attribute_group to device_type
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A 'struct device_type' instance can carry default attributes for the
device. Use this facility to remove the export of
nd_mapping_attribute_group and put the responsibility on the core rather
than leaf implementations to define this attribute.

Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Oliver O'Halloran" <oohall@gmail.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
arch/powerpc/platforms/pseries/papr_scm.c | 6 ------
drivers/acpi/nfit/core.c | 1 -
drivers/nvdimm/region_devs.c | 4 ++--
include/linux/libnvdimm.h | 1 -
4 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c
index 6428834d7cd5..0405fb769336 100644
--- a/arch/powerpc/platforms/pseries/papr_scm.c
+++ b/arch/powerpc/platforms/pseries/papr_scm.c
@@ -284,11 +284,6 @@ int papr_scm_ndctl(struct nvdimm_bus_descriptor *nd_desc, struct nvdimm *nvdimm,
return 0;
}

-static const struct attribute_group *region_attr_groups[] = {
- &nd_mapping_attribute_group,
- NULL,
-};
-
static const struct attribute_group *bus_attr_groups[] = {
&nvdimm_bus_attribute_group,
NULL,
@@ -362,7 +357,6 @@ static int papr_scm_nvdimm_init(struct papr_scm_priv *p)
mapping.size = p->blocks * p->block_size; // XXX: potential overflow?

memset(&ndr_desc, 0, sizeof(ndr_desc));
- ndr_desc.attr_groups = region_attr_groups;
target_nid = dev_to_node(&p->pdev->dev);
online_nid = papr_scm_node(target_nid);
ndr_desc.numa_node = online_nid;
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 99e20b8b6ea0..69c406ecc3a6 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -2196,7 +2196,6 @@ static const struct attribute_group acpi_nfit_region_attribute_group = {
};

static const struct attribute_group *acpi_nfit_region_attribute_groups[] = {
- &nd_mapping_attribute_group,
&acpi_nfit_region_attribute_group,
NULL,
};
diff --git a/drivers/nvdimm/region_devs.c b/drivers/nvdimm/region_devs.c
index f97166583294..0afc1973e938 100644
--- a/drivers/nvdimm/region_devs.c
+++ b/drivers/nvdimm/region_devs.c
@@ -751,11 +751,10 @@ static struct attribute *mapping_attributes[] = {
NULL,
};

-struct attribute_group nd_mapping_attribute_group = {
+static const struct attribute_group nd_mapping_attribute_group = {
.is_visible = mapping_visible,
.attrs = mapping_attributes,
};
-EXPORT_SYMBOL_GPL(nd_mapping_attribute_group);

static const struct attribute_group nd_region_attribute_group = {
.attrs = nd_region_attributes,
@@ -766,6 +765,7 @@ static const struct attribute_group *nd_region_attribute_groups[] = {
&nd_device_attribute_group,
&nd_region_attribute_group,
&nd_numa_attribute_group,
+ &nd_mapping_attribute_group,
NULL,
};

diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index 312248d334c7..eb597d1cb891 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -67,7 +67,6 @@ enum {

extern struct attribute_group nvdimm_bus_attribute_group;
extern struct attribute_group nvdimm_attribute_group;
-extern struct attribute_group nd_mapping_attribute_group;

struct nvdimm;
struct nvdimm_bus_descriptor;
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