From: Dan Williams dan.j.williams@intel.com
[ Upstream commit b5fd2e00a60248902315fb32210550ac3cb9f44c ]
A "short" ARS (address range scrub) instructs the platform firmware to return known errors. In contrast, a "long" ARS instructs platform firmware to arrange every data address on the DIMM to be read / checked for poisoned data.
The conversion of the flags in commit d3abaf43bab8 "acpi, nfit: Fix Address Range Scrub completion tracking", changed the meaning of passing '0' to acpi_nfit_ars_rescan(). Previously '0' meant "not short", now '0' is ARS_REQ_SHORT. Pass ARS_REQ_LONG to restore the expected scrub-type behavior of user-initiated ARS sessions.
Fixes: d3abaf43bab8 ("acpi, nfit: Fix Address Range Scrub completion tracking") Reported-by: Jacek Zloch jacek.zloch@intel.com Cc: Vishal Verma vishal.l.verma@intel.com Reviewed-by: Dave Jiang dave.jiang@intel.com Reviewed-by: Vishal Verma vishal.l.verma@intel.com Signed-off-by: Dan Williams dan.j.williams@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/acpi/nfit/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index c5d15752dfb3..75b331f8a16a 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -1303,7 +1303,7 @@ static ssize_t scrub_store(struct device *dev, if (nd_desc) { struct acpi_nfit_desc *acpi_desc = to_acpi_desc(nd_desc);
- rc = acpi_nfit_ars_rescan(acpi_desc, 0); + rc = acpi_nfit_ars_rescan(acpi_desc, ARS_REQ_LONG); } device_unlock(dev); if (rc)