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libnvdimm: handle locked label storage areas

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Per the latest version of the "NVDIMM DSM Interface Example" [1], the
label data retrieval routine can report a "locked" status. In this case
all regions associated with that DIMM are disabled until the label area
is unlocked. Provide generic libnvdimm enabling for NVDIMMs with label
data area locking capabilities.

[1]: http://pmem.io/documents/

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams
2017-05-04 11:47:22 -07:00
parent 8f078b38dd
commit 9d62ed9651
5 changed files with 39 additions and 10 deletions
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8
drivers/nvdimm/dimm_devs.c
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@@ -67,6 +67,7 @@ int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd)
struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(ndd->dev);
struct nvdimm_bus_descriptor *nd_desc;
int rc = validate_dimm(ndd);
int cmd_rc = 0;
if (rc)
return rc;
@@ -76,8 +77,11 @@ int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd)
memset(cmd, 0, sizeof(*cmd));
nd_desc = nvdimm_bus->nd_desc;
return nd_desc->ndctl(nd_desc, to_nvdimm(ndd->dev),
ND_CMD_GET_CONFIG_SIZE, cmd, sizeof(*cmd), NULL);
rc = nd_desc->ndctl(nd_desc, to_nvdimm(ndd->dev),
ND_CMD_GET_CONFIG_SIZE, cmd, sizeof(*cmd), &cmd_rc);
if (rc < 0)
return rc;
return cmd_rc;
}
int nvdimm_init_config_data(struct nvdimm_drvdata *ndd)