Dan Williams <dan.j.willi...@intel.com> writes:

> 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.
>
Reviewed-by: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com>
> Cc: Ira Weiny <ira.we...@intel.com>
> Cc: Michael Ellerman <m...@ellerman.id.au>
> Cc: "Oliver O'Halloran" <ooh...@gmail.com>
> Cc: Vishal Verma <vishal.l.ve...@intel.com>
> Cc: Aneesh Kumar K.V <aneesh.ku...@linux.ibm.com>
> Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
> ---
>  arch/powerpc/platforms/pseries/papr_scm.c |    9 ++-----
>  drivers/acpi/nfit/core.c                  |    1 -
>  drivers/nvdimm/dimm_devs.c                |   36 
> +++++++++++++++--------------
>  include/linux/libnvdimm.h                 |    1 -
>  4 files changed, 20 insertions(+), 27 deletions(-)
>
> diff --git a/arch/powerpc/platforms/pseries/papr_scm.c 
> b/arch/powerpc/platforms/pseries/papr_scm.c
> index 0405fb769336..8354737ac340 100644
> --- 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 69c406ecc3a6..84fc1f865802 100644
> --- 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 278867c68682..94ea6dba6b4f 100644
> --- 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 eb597d1cb891..3644af97bcb4 100644
> --- 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;
> _______________________________________________
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