On Tue, Dec 07, 2010 at 08:25:26AM +0100, Henrik Rydberg wrote:
> /**
> + * struct input_devinfo - device information via EVIOCGDEVINFO ioctl
> + * @types: bitmask of types (DEVTYPE_*) matching this device
> + * @capabilities: bitmask of capabilities (DEVCAPS_*) of this device
> + *
> + * This struct provides information about the device needed for
> + * automatic setup in userspace, such as if the device is direct
> + * (touchscreen) or indirect (touchpad), and if there are other
> + * special considerations, such as the touchpad also being a button.
> + */
> +struct input_devinfo {
> + __u32 types;
> + __u32 capabilities;
> +};
Why use an ioctl for this at all? It's just 2 simple values that don't
need to be atomically read at the same time. What's wrong with 2 more
sysfs files?
thanks,
greg k-h
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