diff options
| author |   Dan Williams <dan.j.williams@intel.com> | 2016-03-03 16:08:54 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-03-05 18:06:14 -0800 |
| commit | d4f323672aa63713b7ca26da418f66cc30d3a41a (patch) | |
| tree | c073dd799eab97ed7b6e7e04a94c16e793361285 /drivers/acpi | |
| parent | libnvdimm: Fix security issue with DSM IOCTL. (diff) | |
| download | linux-dev-d4f323672aa63713b7ca26da418f66cc30d3a41a.tar.xz linux-dev-d4f323672aa63713b7ca26da418f66cc30d3a41a.zip | |
nfit, libnvdimm: clear poison command support
Add the boiler-plate for a 'clear error' command based on section
9.20.7.6 "Function Index 4 - Clear Uncorrectable Error" from the ACPI
6.1 specification, and add a reference implementation in nfit_test.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/nfit.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c index 0def4ebf5d43..c067d7414007 100644 --- a/drivers/acpi/nfit.c +++ b/drivers/acpi/nfit.c @@ -87,6 +87,7 @@ static struct acpi_device *to_acpi_dev(struct acpi_nfit_desc *acpi_desc) static int xlat_status(void *buf, unsigned int cmd) { + struct nd_cmd_clear_error *clear_err; struct nd_cmd_ars_status *ars_status; struct nd_cmd_ars_start *ars_start; struct nd_cmd_ars_cap *ars_cap; @@ -149,6 +150,15 @@ static int xlat_status(void *buf, unsigned int cmd) if (ars_status->status >> 16) return -EIO; break; + case ND_CMD_CLEAR_ERROR: + clear_err = buf; + if (clear_err->status & 0xffff) + return -EIO; + if (!clear_err->cleared) + return -EIO; + if (clear_err->length > clear_err->cleared) + return clear_err->cleared; + break; default: break; } @@ -1002,7 +1012,7 @@ static void acpi_nfit_init_dsms(struct acpi_nfit_desc *acpi_desc) if (!adev) return; - for (i = ND_CMD_ARS_CAP; i <= ND_CMD_ARS_STATUS; i++) + for (i = ND_CMD_ARS_CAP; i <= ND_CMD_CLEAR_ERROR; i++) if (acpi_check_dsm(adev->handle, uuid, 1, 1ULL << i)) set_bit(i, &nd_desc->dsm_mask); } |