On Friday 27 November 2015 18:00:31 WEN Pingbo wrote:
> This patch depends on 'introduce new evdev interface'.
>
> Userspace cat set / get evdev interface type via the two ioctl
> commands. And default interface type is EV_IF_LEGACY, so the old binary
> will work normal with new kernel. Maybe we should change this default
> option to encourage people to move to new interface.
>
> And since all events are stored as input_value in evdev, there are no
> need to flush evdev_client's buffer if we change clk_type and if_type.
I would split out the change to evdev_set_clk_type into a separate patch.
> + case EVIOCSIFTYPE:
> + if (get_user(if_type, ip))
> + return -EFAULT;
> +
> + return evdev_set_if_type(client, if_type);
> + case EVIOCGIFTYPE:
> + return put_user(client->if_type, ip);
> }
This look asymmetric: EVIOCSIFTYPE uses a EVDEV_* constant, while
EVIOCGIFTYPE returns a EV_IF_* constant. Should those just
be the same constants anyway?
Arnd
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