drm/log: Add free callback

Free the client memory in the client free callback. Also move the
debugging output into the free callback: drm_client_release() puts
the reference on the DRM device, so pointers to the device should
be considered dangling afterwards.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>>
Link: https://lore.kernel.org/r/20251009132006.45834-4-tzimmermann@suse.de

Author: tdz

drivers/gpu/drm/clients/drm_log.c

@@ -293,19 +293,26 @@ static void drm_log_free_scanout(struct drm_client_dev *client)
 	}
 }
 
-static void drm_log_client_unregister(struct drm_client_dev *client)
+static void drm_log_client_free(struct drm_client_dev *client)
 {
 	struct drm_log *dlog = client_to_drm_log(client);
 	struct drm_device *dev = client->dev;
 
+	kfree(dlog);
+
+	drm_dbg(dev, "Unregistered with drm log\n");
+}
+
+static void drm_log_client_unregister(struct drm_client_dev *client)
+{
+	struct drm_log *dlog = client_to_drm_log(client);
+
 	unregister_console(&dlog->con);
 
 	mutex_lock(&dlog->lock);
 	drm_log_free_scanout(client);
 	mutex_unlock(&dlog->lock);
 	drm_client_release(client);
-	kfree(dlog);
-	drm_dbg(dev, "Unregistered with drm log\n");
 }
 
 static int drm_log_client_hotplug(struct drm_client_dev *client)
@@ -339,6 +346,7 @@ static int drm_log_client_resume(struct drm_client_dev *client)
 
 static const struct drm_client_funcs drm_log_client_funcs = {
 	.owner		= THIS_MODULE,
+	.free		= drm_log_client_free,
 	.unregister	= drm_log_client_unregister,
 	.hotplug	= drm_log_client_hotplug,
 	.suspend	= drm_log_client_suspend,