Adding a kernel module parameter no_start_ars in order to bypass kernel
initiating scrubbing ARS.
Signed-off-by: Dave Jiang <dave.ji...@intel.com>
---
drivers/acpi/nfit/core.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 32670b82fbfc..fa4023ffa022 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -55,6 +55,10 @@ module_param(default_dsm_family, int, S_IRUGO);
MODULE_PARM_DESC(default_dsm_family,
"Try this DSM type first when identifying NVDIMM family");
+static int no_start_ars = 0;
+module_param(no_start_ars, int, S_IRUGO);
+MODULE_PARM_DESC(no_start_ars, "Disable kernel from initiate ARS at boot");
+
LIST_HEAD(acpi_descs);
DEFINE_MUTEX(acpi_desc_lock);
@@ -2962,10 +2966,13 @@ static void acpi_nfit_scrub(struct work_struct *work)
* we'll just go ahead and register the region.
*/
if (!acpi_desc->init_complete) {
- dev_dbg(dev, "Range %d requested for ARS\n",
- nfit_spa->spa->range_index);
- nfit_spa->ars_state = NFIT_ARS_STATE_REQUESTED;
- ars_needed++;
+ if (!no_start_ars) {
+ dev_dbg(dev, "Range %d requested for ARS\n",
+ nfit_spa->spa->range_index);
+ nfit_spa->ars_state =
+ NFIT_ARS_STATE_REQUESTED;
+ ars_needed++;
+ }
} else {
acpi_nfit_register_region(acpi_desc, nfit_spa);
dev_dbg(dev, "Range %d register region\n",
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