libnvdimm: Move nvdimm_attribute_group to device_type

A 'struct device_type' instance can carry default attributes for the
device. Use this facility to remove the export of
nvdimm_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>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/157309903201.1582359.10966209746585062329.stgit@dwillia2-desk3.amr.corp.intel.com

diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c
index 0405fb7..8354737 100644 (file)
--- a/arch/powerpc/platforms/pseries/papr_scm.c
+++ b/arch/powerpc/platforms/pseries/papr_scm.c
@@ -289,11 +289,6 @@ static const struct attribute_group *bus_attr_groups[] = {
        NULL,
 };
 
-static const struct attribute_group *papr_scm_dimm_groups[] = {
-       &nvdimm_attribute_group,
-       NULL,
-};
-
 static inline int papr_scm_node(int node)
 {
        int min_dist = INT_MAX, dist;
@@ -339,8 +334,8 @@ static int papr_scm_nvdimm_init(struct papr_scm_priv *p)
        dimm_flags = 0;
        set_bit(NDD_ALIASING, &dimm_flags);
 
-       p->nvdimm = nvdimm_create(p->bus, p, papr_scm_dimm_groups,
-                               dimm_flags, PAPR_SCM_DIMM_CMD_MASK, 0, NULL);
+       p->nvdimm = nvdimm_create(p->bus, p, NULL, dimm_flags,
+                                 PAPR_SCM_DIMM_CMD_MASK, 0, NULL);
        if (!p->nvdimm) {
                dev_err(dev, "Error creating DIMM object for %pOF\n", p->dn);
                goto err;

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 69c406e..84fc1f8 100644 (file)
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1698,7 +1698,6 @@ static const struct attribute_group acpi_nfit_dimm_attribute_group = {
 };
 
 static const struct attribute_group *acpi_nfit_dimm_attribute_groups[] = {
-       &nvdimm_attribute_group,
        &acpi_nfit_dimm_attribute_group,
        NULL,
 };

diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
index 278867c..94ea6db 100644 (file)
--- a/drivers/nvdimm/dimm_devs.c
+++ b/drivers/nvdimm/dimm_devs.c
@@ -202,22 +202,6 @@ static void nvdimm_release(struct device *dev)
        kfree(nvdimm);
 }
 
-static const struct attribute_group *nvdimm_attribute_groups[] = {
-       &nd_device_attribute_group,
-       NULL,
-};
-
-static const struct device_type nvdimm_device_type = {
-       .name = "nvdimm",
-       .release = nvdimm_release,
-       .groups = nvdimm_attribute_groups,
-};
-
-bool is_nvdimm(struct device *dev)
-{
-       return dev->type == &nvdimm_device_type;
-}
-
 struct nvdimm *to_nvdimm(struct device *dev)
 {
        struct nvdimm *nvdimm = container_of(dev, struct nvdimm, dev);
@@ -456,11 +440,27 @@ static umode_t nvdimm_visible(struct kobject *kobj, struct attribute *a, int n)
        return 0;
 }
 
-struct attribute_group nvdimm_attribute_group = {
+static const struct attribute_group nvdimm_attribute_group = {
        .attrs = nvdimm_attributes,
        .is_visible = nvdimm_visible,
 };
-EXPORT_SYMBOL_GPL(nvdimm_attribute_group);
+
+static const struct attribute_group *nvdimm_attribute_groups[] = {
+       &nd_device_attribute_group,
+       &nvdimm_attribute_group,
+       NULL,
+};
+
+static const struct device_type nvdimm_device_type = {
+       .name = "nvdimm",
+       .release = nvdimm_release,
+       .groups = nvdimm_attribute_groups,
+};
+
+bool is_nvdimm(struct device *dev)
+{
+       return dev->type == &nvdimm_device_type;
+}
 
 struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus,
                void *provider_data, const struct attribute_group **groups,

diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index eb597d1..3644af9 100644 (file)
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -66,7 +66,6 @@ enum {
 };
 
 extern struct attribute_group nvdimm_bus_attribute_group;
-extern struct attribute_group nvdimm_attribute_group;
 
 struct nvdimm;
 struct nvdimm_bus_descriptor;