diff options
| author | Toshi Kani <toshi.kani@hpe.com> | 2016-04-26 00:34:59 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-04-27 00:48:04 +0300 |
| commit | 38a879ba9c0a6849fe26c36e325f754a89848da7 (patch) | |
| tree | 22553c50e19a9d8370701c645605730b5548fbf0 /drivers/acpi/nfit.c | |
| parent | 5ad9a7fde07a95b326da9e650b4f0a41b85e47b5 (diff) | |
| download | linux-38a879ba9c0a6849fe26c36e325f754a89848da7.tar.xz | |
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: 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>
Diffstat (limited to 'drivers/acpi/nfit.c')
| -rw-r--r-- | drivers/acpi/nfit.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 5dc243c65dee..5a7199db2e06 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -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, }; |