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authorDan Williams <dan.j.williams@intel.com>2016-08-22 19:28:37 -0700
committerDan Williams <dan.j.williams@intel.com>2016-08-29 14:55:17 -0700
commitba9c8dd3c22275e46feef429f343b85e9cf3924c (patch)
tree0d15030ac3ac20a2dd9c700f988f575686f0f81b /drivers/nvdimm
parentc14a868a5a14f385059f012e54291de95a538a02 (diff)
acpi, nfit: add dimm device notification support
Per "ACPI 6.1 Section 9.20.3" NVDIMM devices, children of the ACPI0012 NVDIMM Root device, can receive health event notifications. Given that these devices are precluded from registering a notification handler via acpi_driver.acpi_device_ops (due to no _HID), we use acpi_install_notify_handler() directly. The registered handler, acpi_nvdimm_notify(), triggers a poll(2) event on the nmemX/nfit/flags sysfs attribute when a health event notification is received. Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Toshi Kani <toshi.kani@hpe.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Reviewed-by: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
-rw-r--r--drivers/nvdimm/dimm_devs.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/nvdimm/dimm_devs.c b/drivers/nvdimm/dimm_devs.c
index d9bba5edd8dc..ce75cc3f41fb 100644
--- a/drivers/nvdimm/dimm_devs.c
+++ b/drivers/nvdimm/dimm_devs.c
@@ -263,6 +263,12 @@ const char *nvdimm_name(struct nvdimm *nvdimm)
}
EXPORT_SYMBOL_GPL(nvdimm_name);
+struct kobject *nvdimm_kobj(struct nvdimm *nvdimm)
+{
+ return &nvdimm->dev.kobj;
+}
+EXPORT_SYMBOL_GPL(nvdimm_kobj);
+
unsigned long nvdimm_cmd_mask(struct nvdimm *nvdimm)
{
return nvdimm->cmd_mask;