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authorToshi Kani <toshi.kani@hpe.com>2016-08-16 22:08:40 +0300
committerDan Williams <dan.j.williams@intel.com>2016-09-02 04:20:39 +0300
commitaee6598748335794dc25d7c4f16f0d4801f6b584 (patch)
tree0fcbceaa2e2776249cb9bf36a64bb8e51cf0ed11 /drivers/nvdimm/nd.h
parentae551e9ca289762c63a6a139872a63dd66183209 (diff)
downloadlinux-aee6598748335794dc25d7c4f16f0d4801f6b584.tar.xz
libnvdimm: Fix nvdimm_probe error on NVDIMM-N
'ndctl list --buses --dimms' does not list any NVDIMM-Ns since they are considered as idle. ndctl checks if any driver is attached to nmem device. nvdimm_probe() always fails in nvdimm_init_nsarea() since NVDIMM-Ns do not implement optinal ND_CMD_GET_CONFIG_DATA command. Change nvdimm_probe() to accept the case that the CONFIG_DATA command is not implemented for NVDIMM-Ns. The driver attaches without ndd, which keeps it no-op to the device. Reported-by: Brian Boylston <brian.boylston@hpe.com> Signed-off-by: Toshi Kani <toshi.kani@hpe.com> Cc: Dan Williams <dan.j.williams@intel.com> Tested-by: Johannes Thumshirn <jthumshirn@suse.de> Acked-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm/nd.h')
-rw-r--r--drivers/nvdimm/nd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvdimm/nd.h b/drivers/nvdimm/nd.h
index 8024a0ef86d3..38d6f039234e 100644
--- a/drivers/nvdimm/nd.h
+++ b/drivers/nvdimm/nd.h
@@ -191,6 +191,7 @@ void nvdimm_exit(void);
void nd_region_exit(void);
struct nvdimm;
struct nvdimm_drvdata *to_ndd(struct nd_mapping *nd_mapping);
+int nvdimm_check_config_data(struct device *dev);
int nvdimm_init_nsarea(struct nvdimm_drvdata *ndd);
int nvdimm_init_config_data(struct nvdimm_drvdata *ndd);
int nvdimm_set_config_data(struct nvdimm_drvdata *ndd, size_t offset,