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-rw-r--r--drivers/acpi/nfit.c13
-rw-r--r--drivers/nvdimm/bus.c8
-rw-r--r--include/linux/libnvdimm.h1
-rw-r--r--tools/testing/nvdimm/test/nfit.c8
4 files changed, 17 insertions, 13 deletions
diff --git a/drivers/acpi/nfit.c b/drivers/acpi/nfit.c
index 424b362e8fdc..1d4b9c6bdf45 100644
--- a/drivers/acpi/nfit.c
+++ b/drivers/acpi/nfit.c
@@ -1516,13 +1516,13 @@ static int ars_do_start(struct nvdimm_bus_descriptor *nd_desc,
}
static int ars_get_status(struct nvdimm_bus_descriptor *nd_desc,
- struct nd_cmd_ars_status *cmd)
+ struct nd_cmd_ars_status *cmd, u32 size)
{
int rc;
while (1) {
rc = nd_desc->ndctl(nd_desc, NULL, ND_CMD_ARS_STATUS, cmd,
- sizeof(*cmd));
+ size);
if (rc || cmd->status & 0xffff)
return -ENXIO;
@@ -1580,6 +1580,7 @@ static int acpi_nfit_find_poison(struct acpi_nfit_desc *acpi_desc,
struct nd_cmd_ars_start *ars_start = NULL;
struct nd_cmd_ars_cap *ars_cap = NULL;
u64 start, len, cur, remaining;
+ u32 ars_status_size;
int rc;
ars_cap = kzalloc(sizeof(*ars_cap), GFP_KERNEL);
@@ -1609,14 +1610,14 @@ static int acpi_nfit_find_poison(struct acpi_nfit_desc *acpi_desc,
* Check if a full-range ARS has been run. If so, use those results
* without having to start a new ARS.
*/
- ars_status = kzalloc(ars_cap->max_ars_out + sizeof(*ars_status),
- GFP_KERNEL);
+ ars_status_size = ars_cap->max_ars_out;
+ ars_status = kzalloc(ars_status_size, GFP_KERNEL);
if (!ars_status) {
rc = -ENOMEM;
goto out;
}
- rc = ars_get_status(nd_desc, ars_status);
+ rc = ars_get_status(nd_desc, ars_status, ars_status_size);
if (rc)
goto out;
@@ -1646,7 +1647,7 @@ static int acpi_nfit_find_poison(struct acpi_nfit_desc *acpi_desc,
if (rc)
goto out;
- rc = ars_get_status(nd_desc, ars_status);
+ rc = ars_get_status(nd_desc, ars_status, ars_status_size);
if (rc)
goto out;
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c
index 7e2c43f701bc..99953b34fa1d 100644
--- a/drivers/nvdimm/bus.c
+++ b/drivers/nvdimm/bus.c
@@ -392,8 +392,8 @@ static const struct nd_cmd_desc __nd_cmd_bus_descs[] = {
.out_sizes = { 4, },
},
[ND_CMD_ARS_STATUS] = {
- .out_num = 2,
- .out_sizes = { 4, UINT_MAX, },
+ .out_num = 3,
+ .out_sizes = { 4, 4, UINT_MAX, },
},
};
@@ -442,8 +442,8 @@ u32 nd_cmd_out_size(struct nvdimm *nvdimm, int cmd,
return in_field[1];
else if (nvdimm && cmd == ND_CMD_VENDOR && idx == 2)
return out_field[1];
- else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 1)
- return ND_CMD_ARS_STATUS_MAX;
+ else if (!nvdimm && cmd == ND_CMD_ARS_STATUS && idx == 2)
+ return out_field[1] - 8;
return UINT_MAX;
}
diff --git a/include/linux/libnvdimm.h b/include/linux/libnvdimm.h
index bed40dff0e86..c736382fd260 100644
--- a/include/linux/libnvdimm.h
+++ b/include/linux/libnvdimm.h
@@ -28,7 +28,6 @@ enum {
ND_IOCTL_MAX_BUFLEN = SZ_4M,
ND_CMD_MAX_ELEM = 4,
ND_CMD_MAX_ENVELOPE = 16,
- ND_CMD_ARS_STATUS_MAX = SZ_4K,
ND_MAX_MAPPINGS = 32,
/* region flag indicating to direct-map persistent memory by default */
diff --git a/tools/testing/nvdimm/test/nfit.c b/tools/testing/nvdimm/test/nfit.c
index 90bd2ea41032..b3281dcd4a5d 100644
--- a/tools/testing/nvdimm/test/nfit.c
+++ b/tools/testing/nvdimm/test/nfit.c
@@ -217,13 +217,16 @@ static int nfit_test_cmd_set_config_data(struct nd_cmd_set_config_hdr *nd_cmd,
return rc;
}
+#define NFIT_TEST_ARS_RECORDS 4
+
static int nfit_test_cmd_ars_cap(struct nd_cmd_ars_cap *nd_cmd,
unsigned int buf_len)
{
if (buf_len < sizeof(*nd_cmd))
return -EINVAL;
- nd_cmd->max_ars_out = 256;
+ nd_cmd->max_ars_out = sizeof(struct nd_cmd_ars_status)
+ + NFIT_TEST_ARS_RECORDS * sizeof(struct nd_ars_record);
nd_cmd->status = (ND_ARS_PERSISTENT | ND_ARS_VOLATILE) << 16;
return 0;
@@ -246,7 +249,8 @@ static int nfit_test_cmd_ars_status(struct nd_cmd_ars_status *nd_cmd,
if (buf_len < sizeof(*nd_cmd))
return -EINVAL;
- nd_cmd->out_length = 256;
+ nd_cmd->out_length = sizeof(struct nd_cmd_ars_status);
+ /* TODO: emit error records */
nd_cmd->num_records = 0;
nd_cmd->address = 0;
nd_cmd->length = -1ULL;