diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2021-06-15 16:18:22 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2021-06-15 16:47:22 -0700 |
| commit | fd14602d05229671be81018fa226f9afdafdba88 (patch) | |
| tree | 1fc7504178f0e571df5f34bfd87c23bf0d11634a /drivers/nvdimm/dimm_devs.c | |
| parent | 8fdcb1704f61a8fd9be0f3849a174d084def0666 (diff) | |
libnvdimm: Export nvdimm shutdown helper, nvdimm_delete()
CXL is a hotplug bus and arranges for nvdimm devices to be dynamically
discovered and removed. The libnvdimm core manages shutdown of nvdimm
security operations when the device is unregistered. That functionality
is moved to nvdimm_delete() and invoked by the CXL-to-nvdimm glue code.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/162379910271.2993820.2955889139842401250.stgit@dwillia2-desk3.amr.corp.intel.com
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.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c index 9d208570d059..dc7449a40003 100644 --- a/drivers/nvdimm/dimm_devs.c +++ b/drivers/nvdimm/dimm_devs.c @@ -642,6 +642,24 @@ struct nvdimm *__nvdimm_create(struct nvdimm_bus *nvdimm_bus, } EXPORT_SYMBOL_GPL(__nvdimm_create); +void nvdimm_delete(struct nvdimm *nvdimm) +{ + struct device *dev = &nvdimm->dev; + bool dev_put = false; + + /* We are shutting down. Make state frozen artificially. */ + nvdimm_bus_lock(dev); + set_bit(NVDIMM_SECURITY_FROZEN, &nvdimm->sec.flags); + if (test_and_clear_bit(NDD_WORK_PENDING, &nvdimm->flags)) + dev_put = true; + nvdimm_bus_unlock(dev); + cancel_delayed_work_sync(&nvdimm->dwork); + if (dev_put) + put_device(dev); + nd_device_unregister(dev, ND_SYNC); +} +EXPORT_SYMBOL_GPL(nvdimm_delete); + static void shutdown_security_notify(void *data) { struct nvdimm *nvdimm = data; |