nfit: Don't check _STA on NVDIMM devices

The _STA only applies to the root device, not the individual NVDIMMS,
so don't check here. NVDIMM device state flags are checked elsewhere.

Signed-off-by: Linda Knippers <linda.knippers@hp.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index ef8a664..7c2638f 100644 (file)
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -764,9 +764,7 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
        struct acpi_device *adev, *adev_dimm;
        struct device *dev = acpi_desc->dev;
        const u8 *uuid = to_nfit_uuid(NFIT_DEV_DIMM);
-       unsigned long long sta;
-       int i, rc = -ENODEV;
-       acpi_status status;
+       int i;
 
        nfit_mem->dsm_mask = acpi_desc->dimm_dsm_force_en;
        adev = to_acpi_dev(acpi_desc);
@@ -781,25 +779,11 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
                return force_enable_dimms ? 0 : -ENODEV;
        }
 
-       status = acpi_evaluate_integer(adev_dimm->handle, "_STA", NULL, &sta);
-       if (status == AE_NOT_FOUND) {
-               dev_dbg(dev, "%s missing _STA, assuming enabled...\n",
-                               dev_name(&adev_dimm->dev));
-               rc = 0;
-       } else if (ACPI_FAILURE(status))
-               dev_err(dev, "%s failed to retrieve_STA, disabling...\n",
-                               dev_name(&adev_dimm->dev));
-       else if ((sta & ACPI_STA_DEVICE_ENABLED) == 0)
-               dev_info(dev, "%s disabled by firmware\n",
-                               dev_name(&adev_dimm->dev));
-       else
-               rc = 0;
-
        for (i = ND_CMD_SMART; i <= ND_CMD_VENDOR; i++)
                if (acpi_check_dsm(adev_dimm->handle, uuid, 1, 1ULL << i))
                        set_bit(i, &nfit_mem->dsm_mask);
 
-       return force_enable_dimms ? 0 : rc;
+       return 0;
 }
 
 static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc)