It just occurred to me that there could be another intention behind
the ioctl call. Calling ioctl(EVIOCGVERSION) on the /dev/input device
is a way for the code to verify it's actually sending messages to a
/dev/input file, vs some other file. So, while not documented in the
source code, this call may actually have value and protect the caller
from inadvertently specifying an invalid file.

-- Nick



On Mon, Aug 27, 2018 at 11:31 AM Nick Kralevich <[email protected]> wrote:
>
> The version number queried by this ioctl call is never used.
> Delete it.
>
> -- Nick



-- 
Nick Kralevich | [email protected]
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