Change au0828 to use Media Device Allocator API to allocate media device
with the parent usb struct device as the key, so it can be shared with the
snd_usb_audio driver.

Signed-off-by: Shuah Khan <shua...@osg.samsung.com>
---
Changes to patch 0002:
- No changes since patch v2, applies cleanly on top of the following:
media: Protect enable_source and disable_source handler code paths
https://lkml.org/lkml/2016/11/29/1001

 drivers/media/usb/au0828/au0828-core.c | 12 ++++--------
 drivers/media/usb/au0828/au0828.h      |  1 +
 2 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/media/usb/au0828/au0828-core.c 
b/drivers/media/usb/au0828/au0828-core.c
index bfd6482..ff1928e 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -159,9 +159,7 @@ static void au0828_unregister_media_device(struct 
au0828_dev *dev)
        dev->media_dev->disable_source = NULL;
        mutex_unlock(&mdev->graph_mutex);
 
-       media_device_unregister(dev->media_dev);
-       media_device_cleanup(dev->media_dev);
-       kfree(dev->media_dev);
+       media_device_delete(dev->media_dev, KBUILD_MODNAME);
        dev->media_dev = NULL;
 #endif
 }
@@ -214,14 +212,10 @@ static int au0828_media_device_init(struct au0828_dev 
*dev,
 #ifdef CONFIG_MEDIA_CONTROLLER
        struct media_device *mdev;
 
-       mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+       mdev = media_device_usb_allocate(udev, KBUILD_MODNAME);
        if (!mdev)
                return -ENOMEM;
 
-       /* check if media device is already initialized */
-       if (!mdev->dev)
-               media_device_usb_init(mdev, udev, udev->product);
-
        dev->media_dev = mdev;
 #endif
        return 0;
@@ -482,6 +476,8 @@ static int au0828_media_device_register(struct au0828_dev 
*dev,
                /* register media device */
                ret = media_device_register(dev->media_dev);
                if (ret) {
+                       media_device_delete(dev->media_dev, KBUILD_MODNAME);
+                       dev->media_dev = NULL;
                        dev_err(&udev->dev,
                                "Media Device Register Error: %d\n", ret);
                        return ret;
diff --git a/drivers/media/usb/au0828/au0828.h 
b/drivers/media/usb/au0828/au0828.h
index dd7b378..4bf1b0c 100644
--- a/drivers/media/usb/au0828/au0828.h
+++ b/drivers/media/usb/au0828/au0828.h
@@ -35,6 +35,7 @@
 #include <media/v4l2-ctrls.h>
 #include <media/v4l2-fh.h>
 #include <media/media-device.h>
+#include <media/media-dev-allocator.h>
 
 /* DVB */
 #include "demux.h"
-- 
2.7.4

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