media fixes for v4.6-rc7

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Merge tag 'media/v4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

  - deadlock fixes on driver probe at exynos4-is and s43-camif drivers

  - a build breakage if media controller is enabled and USB or PCI is
   built as module.

* tag 'media/v4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  [media] media-device: fix builds when USB or PCI is compiled as module
  [media] media: s3c-camif: fix deadlock on driver probe()
  [media] media: exynos4-is: fix deadlock on driver probe

drivers/media/media-device.c

@@ -846,11 +846,11 @@ struct media_device *media_device_find_devres(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(media_device_find_devres);
 
+#if IS_ENABLED(CONFIG_PCI)
 void media_device_pci_init(struct media_device *mdev,
 			   struct pci_dev *pci_dev,
 			   const char *name)
 {
-#ifdef CONFIG_PCI
 	mdev->dev = &pci_dev->dev;
 
 	if (name)
@@ -866,16 +866,16 @@ void media_device_pci_init(struct media_device *mdev,
 	mdev->driver_version = LINUX_VERSION_CODE;
 
 	media_device_init(mdev);
-#endif
 }
 EXPORT_SYMBOL_GPL(media_device_pci_init);
+#endif
 
+#if IS_ENABLED(CONFIG_USB)
 void __media_device_usb_init(struct media_device *mdev,
 			     struct usb_device *udev,
 			     const char *board_name,
 			     const char *driver_name)
 {
-#ifdef CONFIG_USB
 	mdev->dev = &udev->dev;
 
 	if (driver_name)
@@ -895,9 +895,9 @@ void __media_device_usb_init(struct media_device *mdev,
 	mdev->driver_version = LINUX_VERSION_CODE;
 
 	media_device_init(mdev);
-#endif
 }
 EXPORT_SYMBOL_GPL(__media_device_usb_init);
+#endif
 
 
 #endif /* CONFIG_MEDIA_CONTROLLER */

drivers/media/platform/exynos4-is/media-dev.c

@@ -1446,22 +1446,13 @@ static int fimc_md_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, fmd);
 
-	/* Protect the media graph while we're registering entities */
-	mutex_lock(&fmd->media_dev.graph_mutex);
-
 	ret = fimc_md_register_platform_entities(fmd, dev->of_node);
-	if (ret) {
-		mutex_unlock(&fmd->media_dev.graph_mutex);
+	if (ret)
 		goto err_clk;
-	}
 
 	ret = fimc_md_register_sensor_entities(fmd);
-	if (ret) {
-		mutex_unlock(&fmd->media_dev.graph_mutex);
+	if (ret)
 		goto err_m_ent;
-	}
-
-	mutex_unlock(&fmd->media_dev.graph_mutex);
 
 	ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode);
 	if (ret)

drivers/media/platform/s3c-camif/camif-core.c

@@ -493,21 +493,17 @@ static int s3c_camif_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto err_sens;
 
-	mutex_lock(&camif->media_dev.graph_mutex);
-
 	ret = v4l2_device_register_subdev_nodes(&camif->v4l2_dev);
 	if (ret < 0)
-		goto err_unlock;
+		goto err_sens;
 
 	ret = camif_register_video_nodes(camif);
 	if (ret < 0)
-		goto err_unlock;
+		goto err_sens;
 
 	ret = camif_create_media_links(camif);
 	if (ret < 0)
-		goto err_unlock;
-
-	mutex_unlock(&camif->media_dev.graph_mutex);
+		goto err_sens;
 
 	ret = media_device_register(&camif->media_dev);
 	if (ret < 0)
@@ -516,8 +512,6 @@ static int s3c_camif_probe(struct platform_device *pdev)
 	pm_runtime_put(dev);
 	return 0;
 
-err_unlock:
-	mutex_unlock(&camif->media_dev.graph_mutex);
 err_sens:
 	v4l2_device_unregister(&camif->v4l2_dev);
 	media_device_unregister(&camif->media_dev);