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authorDan Williams <dan.j.williams@intel.com>2017-05-04 21:47:22 +0300
committerDan Williams <dan.j.williams@intel.com>2017-05-05 01:41:39 +0300
commit9d62ed96511823fa9c2ac7a819d7b4be22a9a6de (patch)
tree960201b66f5fb6733dda4ab6b274fe6fafcf0e29 /drivers/nvdimm/dimm_devs.c
parent8f078b38dd382710884ce7abd31a1935c440e6f8 (diff)
downloadlinux-9d62ed96511823fa9c2ac7a819d7b4be22a9a6de.tar.xz
libnvdimm: handle locked label storage areas
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>
Diffstat (limited to 'drivers/nvdimm/dimm_devs.c')
-rw-r--r--drivers/nvdimm/dimm_devs.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
index 7d1a3dbc7d5d..fac1e9fbd11d 100644
--- a/drivers/nvdimm/dimm_devs.c
+++ b/drivers/nvdimm/dimm_devs.c
@@ -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)