acpi/nfit: Add sysfs "id" for NVDIMM ID (38a879ba) · Commits · 戴 / test

ACPI 6.1, section 5.2.25.9, defines an identifier for an NVDIMM. Change the NFIT driver to add a new sysfs file "id" under nfit directory. Signed-off-by:

Toshi Kani <toshi.kani@hpe.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Robert Moore <robert.moore@intel.com> Cc: Robert Elliott <elliott@hpe.com> Signed-off-by:

Dan Williams <dan.j.williams@intel.com>

drivers/acpi/nfit.c

+19 −0

Original line number	Diff line number	Diff line
		@@ -870,6 +870,24 @@ static ssize_t flags_show(struct device *dev,
		}
		static DEVICE_ATTR_RO(flags);

		static ssize_t id_show(struct device *dev,
		struct device_attribute attr, char buf)
		{
		struct acpi_nfit_control_region *dcr = to_nfit_dcr(dev);

		if (dcr->valid_fields & ACPI_NFIT_CONTROL_MFG_INFO_VALID)
		return sprintf(buf, "%04x-%02x-%04x-%08x\n",
		be16_to_cpu(dcr->vendor_id),
		dcr->manufacturing_location,
		be16_to_cpu(dcr->manufacturing_date),
		be32_to_cpu(dcr->serial_number));
		else
		return sprintf(buf, "%04x-%08x\n",
		be16_to_cpu(dcr->vendor_id),
		be32_to_cpu(dcr->serial_number));
		}
		static DEVICE_ATTR_RO(id);

		static struct attribute *acpi_nfit_dimm_attributes[] = {
		&dev_attr_handle.attr,
		&dev_attr_phys_id.attr,
		@@ -879,6 +897,7 @@ static struct attribute *acpi_nfit_dimm_attributes[] = {
		&dev_attr_serial.attr,
		&dev_attr_rev_id.attr,
		&dev_attr_flags.attr,
		&dev_attr_id.attr,
		NULL,
		};

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