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| author | Dave Jiang <dave.jiang@intel.com> | 2016-09-09 09:10:08 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-09-09 17:34:46 -0700 |
| commit | 1e8b8d9619f9476e94f32eb20cab000d50d236aa (patch) | |
| tree | 916ab96acbdc05f548e85b3897be7167276b3e4f | |
| parent | 2e21807d4b131dfd4a8e5c82116a85b62f28aeec (diff) | |
| download | linux-1e8b8d9619f9476e94f32eb20cab000d50d236aa.tar.gz | |
libnvdimm: allow legacy (e820) pmem region to clear bad blocks
Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation where legacy pmem is being used or a pmem region created by using memmap kernel parameter, the injected bad blocks are not cleared due to nvdimm_clear_poison() failing from lack of ndctl function pointer. In this case we need to just return as handled and allow the bad blocks to be cleared rather than fail. Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
| -rw-r--r-- | drivers/nvdimm/bus.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 458daf927336..935866fe5ec2 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -185,8 +185,12 @@ long nvdimm_clear_poison(struct device *dev, phys_addr_t phys, return -ENXIO; nd_desc = nvdimm_bus->nd_desc; + /* + * if ndctl does not exist, it's PMEM_LEGACY and + * we want to just pretend everything is handled. + */ if (!nd_desc->ndctl) - return -ENXIO; + return len; memset(&ars_cap, 0, sizeof(ars_cap)); ars_cap.address = phys; |