acpi, nfit: hide unknown commands from nmemX/commands
For vendor specific commands that do not have a common kernel
translation, hide them from nmemX/commands. For example, the following
results from new enabling to probe for support of the new
NVDIMM_FAMILY_INTEL DSMs specified in v1.6 of the command specification
[1]:
# cat /sys/bus/nd/devices/nmem0/commands
smart smart_thresh flags get_size get_data set_data effect_size
effect_log vendor cmd_call unknown unknown unknown unknown unknown
unknown unknown unknown
[1]: https://pmem.io/documents/NVDIMM_DSM_Interface-V1.6.pdf
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index ebe0857..444832b 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1769,8 +1769,14 @@
* userspace interface.
*/
cmd_mask = 1UL << ND_CMD_CALL;
- if (nfit_mem->family == NVDIMM_FAMILY_INTEL)
- cmd_mask |= nfit_mem->dsm_mask;
+ if (nfit_mem->family == NVDIMM_FAMILY_INTEL) {
+ /*
+ * These commands have a 1:1 correspondence
+ * between DSM payload and libnvdimm ioctl
+ * payload format.
+ */
+ cmd_mask |= nfit_mem->dsm_mask & NVDIMM_STANDARD_CMDMASK;
+ }
if (nfit_mem->has_lsi)
set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);