From fd14602d05229671be81018fa226f9afdafdba88 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 15 Jun 2021 16:18:22 -0700 Subject: 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 Link: https://lore.kernel.org/r/162379910271.2993820.2955889139842401250.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams --- drivers/nvdimm/bus.c | 19 ++++--------------- drivers/nvdimm/dimm_devs.c | 18 ++++++++++++++++++ 2 files changed, 22 insertions(+), 15 deletions(-) (limited to 'drivers/nvdimm') diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 3a777d0073b7..a11821df83b5 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -396,21 +396,10 @@ static int child_unregister(struct device *dev, void *data) if (dev->class) return 0; - if (is_nvdimm(dev)) { - struct nvdimm *nvdimm = to_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); + if (is_nvdimm(dev)) + nvdimm_delete(to_nvdimm(dev)); + else + nd_device_unregister(dev, ND_SYNC); return 0; } 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; -- cgit v1.2.3