On Sat, Sep 01, 2012 at 09:57:09AM +0800, Du, Changbin wrote:
> From: "Du, Changbin" <changbin.du@xxxxxxxxx>
>
> Each rc-raw device has a property "allowed_protos" stored in structure
> ir_raw_event_ctrl. But it didn't work because all decoders would be
> called when decoding. This path makes only allowed protocol decoders
> been invoked.
>
> Signed-off-by: Du, Changbin <changbin.du@xxxxxxxxx>
> ---
> drivers/media/rc/ir-raw.c | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/rc/ir-raw.c b/drivers/media/rc/ir-raw.c
> index a820251..198b6d8 100644
> --- a/drivers/media/rc/ir-raw.c
> +++ b/drivers/media/rc/ir-raw.c
> @@ -63,8 +63,12 @@ static int ir_raw_event_thread(void *data)
> spin_unlock_irq(&raw->lock);
>
> mutex_lock(&ir_raw_handler_lock);
> - list_for_each_entry(handler, &ir_raw_handler_list, list)
> - handler->decode(raw->dev, ev);
> + list_for_each_entry(handler, &ir_raw_handler_list, list) {
> + /* use all protocol by default */
> + if (raw->dev->allowed_protos == RC_TYPE_UNKNOWN ||
> + raw->dev->allowed_protos & handler->protocols)
> + handler->decode(raw->dev, ev);
> + }
Each IR protocol decoder already checks whether it is enabled or not;
should it not be so that only allowed protocols can be enabled rather
than checking both enabled_protocols and allowed_protocols?
Just from reading store_protocols it looks like decoders which aren't
in allowed_protocols can be enabled, which makes no sense. Also
ir_raw_event_register all protocols are enabled rather than the
allowed ones.
Lastely I don't know why raw ir drivers should dictate which protocols
can be enabled. Would it not be better to remove it entirely?
> raw->prev_ev = ev;
> mutex_unlock(&ir_raw_handler_lock);
> }
> --
> 1.7.9.5
>
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