On 07/25/2012 08:11 PM, Mark Brown wrote: >> Why do you should report released event to all of buttons? I think that >> you should only >> report released event to previous pressed button. If user press two >> button on the headset >> at the same time and then user release only one button with pressed >> another button, extcon-arizona driver have to report released event to >> previous pressed button except for still pressed another button. > > The input API already supresses duplicate reports, they won't be > propagated to userspace, so there's no point in duplicating the work > to remember what buttons are pressed in individual drivers. Userspace > will only see events reported that refect changes in state.
The extcon-arizona include six buttons(BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5). Currently, extcon-arizona driver will report released event to all buttons (BTN_0, BTN_1, BTN_2, BTN_3, BTN_4, BTN_5) when released event irrespective of the type of buttons is happened. If user press BTN_0 and BTN_1 at the same time and then user only released BTN_0 but BTN_1 is still pressed, is it right that report released event to all of buttons? I think that different event between BTN_0 and BTN_1. Thank you, Chanwoo Choi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
