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path: root/drivers/acpi/nfit.c
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Diffstat (limited to 'drivers/acpi/nfit.c')
-rw-r--r--drivers/acpi/nfit.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index ac6ddcc080d4..1f0e06065ae6 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -1131,11 +1131,11 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
/*
* Until standardization materializes we need to consider up to 3
- * different command sets. Note, that checking for zero functions
- * tells us if any commands might be reachable through this uuid.
+ * different command sets. Note, that checking for function0 (bit0)
+ * tells us if any commands are reachable through this uuid.
*/
for (i = NVDIMM_FAMILY_INTEL; i <= NVDIMM_FAMILY_HPE2; i++)
- if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 0))
+ if (acpi_check_dsm(adev_dimm->handle, to_nfit_uuid(i), 1, 1))
break;
/* limit the supported commands to those that are publicly documented */
@@ -1151,9 +1151,10 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc,
if (disable_vendor_specific)
dsm_mask &= ~(1 << 8);
} else {
- dev_err(dev, "unknown dimm command family\n");
+ dev_dbg(dev, "unknown dimm command family\n");
nfit_mem->family = -1;
- return force_enable_dimms ? 0 : -ENODEV;
+ /* DSMs are optional, continue loading the driver... */
+ return 0;
}
uuid = to_nfit_uuid(nfit_mem->family);