On Sat, Jun 17, 2017 at 1:22 AM, Toshi Kani <toshi.kani@xxxxxxx> wrote: > ACPI 6.2 defines in section 9.20.7.2 that the OSPM may call a Start > ARS with Flags Bit [1] set upon receiving the 0x81 notification. > > Upon receiving the notification, the OSPM may decide to issue > a Start ARS with Flags Bit [1] set to prepare for the retrieval > of existing records and issue the Query ARS Status function to > retrieve the records. > > Add support to call a Start ARS from acpi_nfit_uc_error_notify() > with ND_ARS_RETURN_PREV_DATA set when HW_ERROR_SCRUB_ON is not set. > > Link: http://www.uefi.org/sites/default/files/resources/ACPI_6_2.pdf > Signed-off-by: Toshi Kani <toshi.kani@xxxxxxx> > Cc: Dan Williams <dan.j.williams@xxxxxxxxx> > Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> > Cc: Vishal Verma <vishal.l.verma@xxxxxxxxx> > Cc: Linda Knippers <linda.knippers@xxxxxxx> > --- > v3 (2/2): Add flags info to acpi_nfit_desc (Dan Williams) > --- > drivers/acpi/nfit/core.c | 11 ++++++++--- > drivers/acpi/nfit/mce.c | 2 +- > drivers/acpi/nfit/nfit.h | 3 ++- > include/uapi/linux/ndctl.h | 1 + > 4 files changed, 12 insertions(+), 5 deletions(-) > > diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c > index cc22778..7e08ee0 100644 > --- a/drivers/acpi/nfit/core.c > +++ b/drivers/acpi/nfit/core.c > @@ -1031,7 +1031,7 @@ 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); > + rc = acpi_nfit_ars_rescan(acpi_desc, 0); > } > device_unlock(dev); > if (rc) > @@ -2051,6 +2051,7 @@ static int ars_start(struct acpi_nfit_desc *acpi_desc, struct nfit_spa *nfit_spa > memset(&ars_start, 0, sizeof(ars_start)); > ars_start.address = spa->address; > ars_start.length = spa->length; > + ars_start.flags = acpi_desc->ars_start_flags; Hmm don't we also need a statement like this in ars_continue()? > if (nfit_spa_type(spa) == NFIT_SPA_PM) > ars_start.type = ND_ARS_PERSISTENT; > else if (nfit_spa_type(spa) == NFIT_SPA_VOLATILE) > @@ -2613,6 +2614,7 @@ static int acpi_nfit_register_regions(struct acpi_nfit_desc *acpi_desc) > return rc; > } > > + acpi_desc->ars_start_flags = 0; ...and I would think the ND_ARS_RETURN_PREV_DATA context would only be valid for the duration of the current scrub, so we should clear the flags at the end of acpi_nfit_scrub(). -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
