media: chips-media: wave5: Fix a hang after seeking

media: chips-media: wave5: Fix a hang after seeking

commit a2c75e964e51b096e9fe6adfa3eaed53594a668b upstream.

While seeking, the driver calls the flush command. Before the flush
command is sent to the VPU, the driver should handle the display buffer
flags and should get all decoded information from the VPU if the VCORE
is running.

Fixes: 9707a6254a8a ("media: chips-media: wave5: Add the v4l2 layer")
Cc: stable@vger.kernel.org
Signed-off-by: Jackson.lee <jackson.lee@chipsnmedia.com>
Signed-off-by: Nas Chung <nas.chung@chipsnmedia.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>