Hello Back from holidays and back to this issue. Sorry for the delay. > I'm not sure about Ricardo's use case, is it the one we've discussed on #v4l ? > If so, and if I recall correctly, the idea was to perform an action with a > parameter, and didn't require volatility. In my case, there is a trigger overflow bit. The user acks the trigger overflow by writting any value to the control. There is no parameter. In that sense it looks like a volatile read + a button on a controll. > Your proposal is interesting as well, but I'm not sure about the > V4L2_CTRL_FLAG_ACTION name. Aren't all controls supposed to have an action of > some sort ? That's nitpicking of course. What about the name STATELESS_WRITE ? or perhaps VOLATILE_WRITE? I dont care about the name :), but better have it solved before I write the doc :P > > Also, should the action flag be automatically set for button controls ? Button > controls would in a way become type-less controls with the action flag set, > that's interesting. I suppose type-less controls without the action flag don't > make sense. I agree! Best regards and thanks! -- Ricardo Ribalda -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html