[PATCH 1/2] 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(a)intel.com&gt; --- drivers/acpi/nfit/core.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index ebe0857ac346..e0059949700d 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1769,8 +1769,22 @@ static int acpi_nfit_register_dimms(struct acpi_nfit_desc *acpi_desc) * 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 & (1 << ND_CMD_SMART + | 1 << ND_CMD_SMART_THRESHOLD + | 1 << ND_CMD_DIMM_FLAGS + | 1 << ND_CMD_GET_CONFIG_SIZE + | 1 << ND_CMD_GET_CONFIG_DATA + | 1 << ND_CMD_SET_CONFIG_DATA + | 1 << ND_CMD_VENDOR_EFFECT_LOG_SIZE + | 1 << ND_CMD_VENDOR_EFFECT_LOG + | 1 << ND_CMD_VENDOR); + } if (nfit_mem->has_lsi) set_bit(ND_CMD_GET_CONFIG_SIZE, &cmd_mask);