drm: Don't pass the index to drm_property_add_enum()

drm_property_add_enum() can calculate the index itself just fine,
so no point in having the caller pass it in.

Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: nouveau@lists.freedesktop.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180316190420.26734-1-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

1 files changed, 13 insertions, 14 deletions

diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
index 8f4672d..1f8031e 100644
--- a/drivers/gpu/drm/drm_property.c
+++ b/drivers/gpu/drm/drm_property.c
@@ -169,9 +169,9 @@ struct drm_property *drm_property_create_enum(struct drm_device *dev,
 		return NULL;
 
 	for (i = 0; i < num_values; i++) {
-		ret = drm_property_add_enum(property, i,
-				      props[i].type,
-				      props[i].name);
+		ret = drm_property_add_enum(property,
+					    props[i].type,
+					    props[i].name);
 		if (ret) {
 			drm_property_destroy(dev, property);
 			return NULL;
@@ -209,7 +209,7 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 						 uint64_t supported_bits)
 {
 	struct drm_property *property;
-	int i, ret, index = 0;
+	int i, ret;
 	int num_values = hweight64(supported_bits);
 
 	flags |= DRM_MODE_PROP_BITMASK;
@@ -221,14 +221,9 @@ struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
 		if (!(supported_bits & (1ULL << props[i].type)))
 			continue;
 
-		if (WARN_ON(index >= num_values)) {
-			drm_property_destroy(dev, property);
-			return NULL;
-		}
-
-		ret = drm_property_add_enum(property, index++,
-				      props[i].type,
-				      props[i].name);
+		ret = drm_property_add_enum(property,
+					    props[i].type,
+					    props[i].name);
 		if (ret) {
 			drm_property_destroy(dev, property);
 			return NULL;
@@ -376,7 +371,6 @@ EXPORT_SYMBOL(drm_property_create_bool);
 /**
  * drm_property_add_enum - add a possible value to an enumeration property
  * @property: enumeration property to change
- * @index: index of the new enumeration
  * @value: value of the new enumeration
  * @name: symbolic name of the new enumeration
  *
@@ -388,10 +382,11 @@ EXPORT_SYMBOL(drm_property_create_bool);
  * Returns:
  * Zero on success, error code on failure.
  */
-int drm_property_add_enum(struct drm_property *property, int index,
+int drm_property_add_enum(struct drm_property *property,
 			  uint64_t value, const char *name)
 {
 	struct drm_property_enum *prop_enum;
+	int index = 0;
 
 	if (WARN_ON(strlen(name) >= DRM_PROP_NAME_LEN))
 		return -EINVAL;
@@ -411,8 +406,12 @@ int drm_property_add_enum(struct drm_property *property, int index,
 	list_for_each_entry(prop_enum, &property->enum_list, head) {
 		if (WARN_ON(prop_enum->value == value))
 			return -EINVAL;
+		index++;
 	}
 
+	if (WARN_ON(index >= property->num_values))
+		return -EINVAL;
+
 	prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
 	if (!prop_enum)
 		return -ENOMEM;