drm/sysfs: add a helper for extracting connector type from kobject

This reduces duplication in the patches to follow. No functional
changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index ffc305fc2076..33466999b59a 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -407,17 +407,23 @@ static struct attribute *connector_opt_dev_attrs[] = {
         NULL
 };
 
-static umode_t connector_opt_dev_is_visible(struct kobject *kobj,
-                                            struct attribute *attr, int idx)
+/* Connector type related helpers */
+static int kobj_connector_type(struct kobject *kobj)
 {
         struct device *dev = kobj_to_dev(kobj);
         struct drm_connector *connector = to_drm_connector(dev);
 
+        return connector->connector_type;
+}
+
+static umode_t connector_opt_dev_is_visible(struct kobject *kobj,
+                                            struct attribute *attr, int idx)
+{
         /*
          * In the long run it maybe a good idea to make one set of
          * optionals per connector type.
          */
-        switch (connector->connector_type) {
+        switch (kobj_connector_type(kobj)) {
         case DRM_MODE_CONNECTOR_DVII:
         case DRM_MODE_CONNECTOR_Composite:
         case DRM_MODE_CONNECTOR_SVIDEO: