Re: [PATCH 1/7] platform/x86: fujitsu-laptop: do not use kfifo for storing hotkey scancodes

From: Darren Hart
Date: Thu Jun 22 2017 - 19:58:31 EST


On Thu, Jun 22, 2017 at 10:46:19PM +0200, MichaÅ KÄpieÅ wrote:
> > The events seen by userspace with the original code would be "A-press",
> > "B-press", "A-release", "B-release". With the revised code the order of the
> > release events would be reversed compared to the previous behaviour. That
> > is, unless I've misunderstood how sparse_keymap_report_event() works.
>
> All you wrote above is correct and this patch does change the order of
> release events sent to userspace when multiple hotkeys are pressed
> simultaneously. The question is: is it relevant for any practical
> scenario?
>
> Anyway, I find this matter to be of secondary importance. The primary
> objective of this patch is to get rid of the kfifo. If anyone has
> strong feelings about the change in event ordering, I will be happy to
> revert to FIFO in v2.

This all looks reasonable to me, I don't see anything requiring a respin.

--
Darren Hart
VMware Open Source Technology Center