media: tegra: allocate video_device dynamically

Using initialized static video_device for video_register_device
during sensor re-bind will cause panic with following log.
-----------
kobject (ffffffc0794d70c0): tried to init an initialized object,
something is seriously wrong.
-----------
Hence, modify vi driver to use dynamic video_device

bug 2015230
bug 2719996

Change-Id: Ia7bfb5621e34b54a079c45b3f9aafeaa06407515
Reviewed-on: https://git-master.nvidia.com/r/1639229
Signed-off-by: Frank Chen <frankc@nvidia.com>
(cherry picked from commit 39b1a64a8ee9e40cd4f1a99c2d936e3310e5e8b9)
Reviewed-on: https://git-master.nvidia.com/r/2208308
GVS: Gerrit_Virtual_Submit
Reviewed-by: Shan Neng Chen <snchen@nvidia.com>
Reviewed-by: Sudhir Vyas <svyas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/include/media/mc_common.h b/include/media/mc_common.h
index f126ca798..01b034539 100644
--- a/include/media/mc_common.h
+++ b/include/media/mc_common.h
@@ -152,7 +152,7 @@ struct tegra_vi_graph_entity {
 struct tegra_channel {
         int id;
         struct list_head list;
-        struct video_device video;
+        struct video_device *video;
         struct media_pad pad;
         struct media_pipeline pipe;
         struct mutex video_lock;
@@ -396,6 +396,9 @@ void enqueue_inflight(struct tegra_channel *chan,
 struct tegra_channel_buffer *dequeue_inflight(struct tegra_channel *chan);
 int tegra_channel_set_power(struct tegra_channel *chan, bool on);
 
+int tegra_channel_init_video(struct tegra_channel *chan);
+int tegra_channel_cleanup_video(struct tegra_channel *chan);
+
 struct tegra_vi_fops {
         int (*vi_power_on)(struct tegra_channel *chan);
         void (*vi_power_off)(struct tegra_channel *chan);