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path: root/drivers/dma/idxd/sysfs.c
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Diffstat (limited to 'drivers/dma/idxd/sysfs.c')
-rw-r--r--drivers/dma/idxd/sysfs.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 6ca6e520a2fa..3999827970ab 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -419,7 +419,7 @@ static ssize_t engine_group_id_store(struct device *dev,
struct idxd_device *idxd = engine->idxd;
long id;
int rc;
- struct idxd_group *prevg, *group;
+ struct idxd_group *prevg;
rc = kstrtol(buf, 10, &id);
if (rc < 0)
@@ -439,7 +439,6 @@ static ssize_t engine_group_id_store(struct device *dev,
return count;
}
- group = &idxd->groups[id];
prevg = engine->group;
if (prevg)
@@ -513,9 +512,6 @@ static ssize_t group_tokens_reserved_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
- if (idxd->token_limit == 0)
- return -EPERM;
-
if (val > idxd->max_tokens)
return -EINVAL;
@@ -561,8 +557,6 @@ static ssize_t group_tokens_allowed_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
- if (idxd->token_limit == 0)
- return -EPERM;
if (val < 4 * group->num_engines ||
val > group->tokens_reserved + idxd->nr_tokens)
return -EINVAL;
@@ -1180,6 +1174,16 @@ static ssize_t op_cap_show(struct device *dev,
}
static DEVICE_ATTR_RO(op_cap);
+static ssize_t gen_cap_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct idxd_device *idxd =
+ container_of(dev, struct idxd_device, conf_dev);
+
+ return sprintf(buf, "%#llx\n", idxd->hw.gen_cap.bits);
+}
+static DEVICE_ATTR_RO(gen_cap);
+
static ssize_t configurable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1317,6 +1321,7 @@ static struct attribute *idxd_device_attributes[] = {
&dev_attr_max_batch_size.attr,
&dev_attr_max_transfer_size.attr,
&dev_attr_op_cap.attr,
+ &dev_attr_gen_cap.attr,
&dev_attr_configurable.attr,
&dev_attr_clients.attr,
&dev_attr_state.attr,