[PATCH 1/8] drm/connector: Give connector sysfs devices there own device_type

[Hans de Goede]

Give connector sysfs devices there own device_type, this allows us to
check if a device passed to functions dealing with generic devices is
a drm_connector or not.

A check like this is necessary in the drm_connector_acpi_bus_match()
function added in the next patch in this series.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 drivers/gpu/drm/drm_sysfs.c | 50 +++++++++++++++++++++++++++----------
 1 file changed, 37 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 968a9560b4aa..f9d92bbb1f98 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -50,6 +50,10 @@ static struct device_type drm_sysfs_device_minor = {
        .name = "drm_minor"
 };
 
+static struct device_type drm_sysfs_device_connector = {
+       .name = "drm_connector",
+};
+
 struct class *drm_class;
 
 static char *drm_devnode(struct device *dev, umode_t *mode)
@@ -102,6 +106,11 @@ void drm_sysfs_destroy(void)
        drm_class = NULL;
 }
 
+static void drm_sysfs_release(struct device *dev)
+{
+       kfree(dev);
+}
+
 /*
  * Connector properties
  */
@@ -273,27 +282,47 @@ static const struct attribute_group 
*connector_dev_groups[] = {
 int drm_sysfs_connector_add(struct drm_connector *connector)
 {
        struct drm_device *dev = connector->dev;
+       struct device *kdev;
+       int r;
 
        if (connector->kdev)
                return 0;
 
-       connector->kdev =
-               device_create_with_groups(drm_class, dev->primary->kdev, 0,
-                                         connector, connector_dev_groups,
-                                         "card%d-%s", dev->primary->index,
-                                         connector->name);
+       kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
+       if (!kdev)
+               return -ENOMEM;
+
+       device_initialize(kdev);
+       kdev->class = drm_class;
+       kdev->type = &drm_sysfs_device_connector;
+       kdev->parent = dev->primary->kdev;
+       kdev->groups = connector_dev_groups;
+       kdev->release = drm_sysfs_release;
+       dev_set_drvdata(kdev, connector);
+
+       r = dev_set_name(kdev, "card%d-%s", dev->primary->index, 
connector->name);
+       if (r)
+               goto err_free;
+
        DRM_DEBUG("adding \"%s\" to sysfs\n",
                  connector->name);
 
-       if (IS_ERR(connector->kdev)) {
-               DRM_ERROR("failed to register connector device: %ld\n", 
PTR_ERR(connector->kdev));
-               return PTR_ERR(connector->kdev);
+       r = device_add(kdev);
+       if (r) {
+               DRM_ERROR("failed to register connector device: %d\n", r);
+               goto err_free;
        }
 
+       connector->kdev = kdev;
+
        if (connector->ddc)
                return sysfs_create_link(&connector->kdev->kobj,
                                 &connector->ddc->dev.kobj, "ddc");
        return 0;
+
+err_free:
+       put_device(kdev);
+       return r;
 }
 
 void drm_sysfs_connector_remove(struct drm_connector *connector)
@@ -374,11 +403,6 @@ void drm_sysfs_connector_status_event(struct drm_connector 
*connector,
 }
 EXPORT_SYMBOL(drm_sysfs_connector_status_event);
 
-static void drm_sysfs_release(struct device *dev)
-{
-       kfree(dev);
-}
-
 struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
 {
        const char *minor_str;
-- 
2.31.1

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