diff options
Diffstat (limited to 'drivers/acpi/nfit/core.c')
| -rw-r--r-- | drivers/acpi/nfit/core.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 811c399a3a76..5b5e802de7b8 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -56,6 +56,10 @@ static bool no_init_ars; module_param(no_init_ars, bool, 0644); MODULE_PARM_DESC(no_init_ars, "Skip ARS run at nfit init time"); +static bool force_labels; +module_param(force_labels, bool, 0444); +MODULE_PARM_DESC(force_labels, "Opt-in to labels despite missing methods"); + LIST_HEAD(acpi_descs); DEFINE_MUTEX(acpi_desc_lock); @@ -1916,6 +1920,19 @@ static int acpi_nfit_add_dimm(struct acpi_nfit_desc *acpi_desc, dev_dbg(dev, "%s: has _LSW\n", dev_name(&adev_dimm->dev)); set_bit(NFIT_MEM_LSW, &nfit_mem->flags); } + + /* + * Quirk read-only label configurations to preserve + * access to label-less namespaces by default. + */ + if (!test_bit(NFIT_MEM_LSW, &nfit_mem->flags) + && !force_labels) { + dev_dbg(dev, "%s: No _LSW, disable labels\n", + dev_name(&adev_dimm->dev)); + clear_bit(NFIT_MEM_LSR, &nfit_mem->flags); + } else + dev_dbg(dev, "%s: Force enable labels\n", + dev_name(&adev_dimm->dev)); } populate_shutdown_status(nfit_mem); |