V4L/DVB (6088): cx2341x: some controls can't be changed while the device is busy

The driver should now pass the 'busy' state of the device to the cx2341x 
module whenever controls are set or tried. -EBUSY will be returned if 
the device is busy and the user attempts to modify certain 'dangerous' 
controls. It concerns controls that change the audio or video 
compression mode and bitrates.

The cx88-blackbird and pvrusb2 drivers currently always pass '0' (not busy)
to the cx2341x, effectively keeping the old behavior for now.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/media/cx2341x.h b/include/media/cx2341x.h
index 38c12fed7535..af8071d7620d 100644
--- a/include/media/cx2341x.h
+++ b/include/media/cx2341x.h
@@ -91,7 +91,7 @@ int cx2341x_update(void *priv, cx2341x_mbox_func func,
 int cx2341x_ctrl_query(struct cx2341x_mpeg_params *params,
                 struct v4l2_queryctrl *qctrl);
 const char **cx2341x_ctrl_get_menu(u32 id);
-int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params,
+int cx2341x_ext_ctrls(struct cx2341x_mpeg_params *params, int busy,
                 struct v4l2_ext_controls *ctrls, unsigned int cmd);
 void cx2341x_fill_defaults(struct cx2341x_mpeg_params *p);
 void cx2341x_log_status(struct cx2341x_mpeg_params *p, const char *prefix);