diff options
Diffstat (limited to 'drivers/nvdimm/pmem.c')
| -rw-r--r-- | drivers/nvdimm/pmem.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index d46975ed9e40..90902a142e35 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -203,6 +203,23 @@ static int nd_pmem_probe(struct device *dev) struct nd_namespace_io *nsio = to_nd_namespace_io(dev); struct pmem_device *pmem; + if (resource_size(&nsio->res) < ND_MIN_NAMESPACE_SIZE) { + resource_size_t size = resource_size(&nsio->res); + + dev_dbg(dev, "%s: size: %pa, too small must be at least %#x\n", + __func__, &size, ND_MIN_NAMESPACE_SIZE); + return -ENODEV; + } + + if (nd_region_to_nstype(nd_region) == ND_DEVICE_NAMESPACE_PMEM) { + struct nd_namespace_pmem *nspm = to_nd_namespace_pmem(dev); + + if (!nspm->uuid) { + dev_dbg(dev, "%s: uuid not set\n", __func__); + return -ENODEV; + } + } + pmem = pmem_alloc(dev, &nsio->res, nd_region->id); if (IS_ERR(pmem)) return PTR_ERR(pmem); @@ -222,13 +239,14 @@ static int nd_pmem_remove(struct device *dev) MODULE_ALIAS("pmem"); MODULE_ALIAS_ND_DEVICE(ND_DEVICE_NAMESPACE_IO); +MODULE_ALIAS_ND_DEVICE(ND_DEVICE_NAMESPACE_PMEM); static struct nd_device_driver nd_pmem_driver = { .probe = nd_pmem_probe, .remove = nd_pmem_remove, .drv = { .name = "nd_pmem", }, - .type = ND_DRIVER_NAMESPACE_IO, + .type = ND_DRIVER_NAMESPACE_IO | ND_DRIVER_NAMESPACE_PMEM, }; static int __init pmem_init(void) |