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Commit 38a879ba authored by Toshi Kani's avatar Toshi Kani Committed by Dan Williams
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acpi/nfit: Add sysfs "id" for NVDIMM ID 



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: default avatarToshi 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: default avatarDan Williams <dan.j.williams@intel.com>
parent 5ad9a7fd

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,

};