From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: Yurii Pavlovskyi <yurii.pavlovskyi@gmail.com>
Cc: Corentin Chary <corentin.chary@gmail.com>,
Darren Hart <dvhart@infradead.org>,
Andy Shevchenko <andy@infradead.org>,
Daniel Drake <drake@endlessm.com>,
acpi4asus-user <acpi4asus-user@lists.sourceforge.net>,
Platform Driver <platform-driver-x86@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v3 05/11] platform/x86: asus-wmi: Support WMI event queue
Date: Wed, 8 May 2019 16:47:12 +0300 [thread overview]
Message-ID: <CAHp75VdRE8C=ZODLuKC0JktKv4rbw_Y4fOA4J5wBYKPU+URK+A@mail.gmail.com> (raw)
In-Reply-To: <22dc9bfe-af2f-7ea9-e5bc-95647d5411a8@gmail.com>
On Fri, Apr 19, 2019 at 1:10 PM Yurii Pavlovskyi
<yurii.pavlovskyi@gmail.com> wrote:
>
> Event codes are expected to be retrieved from a queue on at least some
> models. Specifically, very likely the ACPI WMI devices with _UID ATK are
> queued whereas those with ASUSWMI are not [1].
>
> The WMI event codes are pushed into a circular buffer queue. After the INIT
> method is called, ACPI code is allowed to push events into this buffer.
> The INIT method cannot be reverted. If the module is unloaded and an event
> (such as hotkey press) gets emitted before inserting it back the events get
> processed delayed by one or if the queue overflows, additionally delayed by
> about 3 seconds.
>
> It might be considered a minor issue and no normal user would likely
> observe this (there is little reason unloading the driver), but it does
> significantly frustrate a developer who is unlucky enough to encounter
> this. Therefore, the fallback to unqueued behavior occurs whenever
> something unexpected happens.
>
> The fix flushes the old key codes out of the queue on load. After receiving
> event the queue is read until either ..FFFF or 1 is encountered. Also as
> noted in [1] it is checked whether notify code is equal to 0xFF before
> enabling queue processing in WMI notify handler.
It's rather a big change. Can it be split to smaller pieces?
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2019-05-08 13:47 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-19 9:57 [PATCH v3 00/11] asus-wmi: Support of ASUS TUF Gaming series laptops Yurii Pavlovskyi
2019-04-19 9:57 ` Yurii Pavlovskyi
2019-04-19 10:00 ` [PATCH v3 01/11] platform/x86: asus-wmi: Fix hwmon device cleanup Yurii Pavlovskyi
2019-04-19 10:00 ` Yurii Pavlovskyi
2019-05-08 13:25 ` Andy Shevchenko
2019-04-19 10:03 ` [PATCH v3 02/11] platform/x86: asus-wmi: Fix preserving keyboard backlight intensity on load Yurii Pavlovskyi
2019-04-19 10:03 ` Yurii Pavlovskyi
2019-04-19 10:05 ` [PATCH v3 03/11] platform/x86: asus-wmi: Increase the input buffer size of WMI methods Yurii Pavlovskyi
2019-04-19 10:05 ` Yurii Pavlovskyi
2019-05-08 13:30 ` Andy Shevchenko
2019-04-19 10:08 ` [PATCH v3 04/11] platform/x86: asus-wmi: Improve DSTS WMI method ID detection Yurii Pavlovskyi
2019-04-19 10:08 ` Yurii Pavlovskyi
2019-05-08 13:36 ` Andy Shevchenko
2019-05-09 6:08 ` Daniel Drake
2019-05-09 17:29 ` Yurii Pavlovskyi
2019-05-09 17:57 ` Andy Shevchenko
2019-04-19 10:10 ` [PATCH v3 05/11] platform/x86: asus-wmi: Support WMI event queue Yurii Pavlovskyi
2019-04-19 10:10 ` Yurii Pavlovskyi
2019-05-08 13:47 ` Andy Shevchenko [this message]
2019-05-09 17:36 ` Yurii Pavlovskyi
2019-04-19 10:11 ` [PATCH v3 06/11] platform/x86: asus-nb-wmi: Add microphone mute key code Yurii Pavlovskyi
2019-04-19 10:11 ` Yurii Pavlovskyi
2019-04-19 10:12 ` [PATCH v3 07/11] platform/x86: asus-wmi: Organize code into sections Yurii Pavlovskyi
2019-04-19 10:12 ` Yurii Pavlovskyi
2019-05-08 13:46 ` Andy Shevchenko
2019-04-19 10:12 ` [PATCH v3 08/11] platform/x86: asus-wmi: Enhance detection of thermal data Yurii Pavlovskyi
2019-04-19 10:12 ` Yurii Pavlovskyi
2019-04-24 18:25 ` Pawnikar, Sumeet R
2019-04-24 18:25 ` Pawnikar, Sumeet R
2019-04-25 18:51 ` Yurii Pavlovskyi
2019-04-25 18:51 ` Yurii Pavlovskyi
2019-05-08 13:58 ` Andy Shevchenko
2019-05-09 17:49 ` Yurii Pavlovskyi
2019-05-09 17:54 ` Andy Shevchenko
2019-04-19 10:14 ` [PATCH v3 09/11] platform/x86: asus-wmi: Control RGB keyboard backlight Yurii Pavlovskyi
2019-04-19 10:14 ` Yurii Pavlovskyi
2019-05-08 14:02 ` Andy Shevchenko
2019-05-08 17:12 ` Pavel Machek
2019-05-09 19:04 ` Yurii Pavlovskyi
2019-05-09 20:45 ` Dan Murphy
2019-05-09 20:45 ` Dan Murphy
2019-05-09 21:06 ` Andy Shevchenko
2019-05-09 21:44 ` Dan Murphy
2019-05-09 21:44 ` Dan Murphy
2019-05-09 22:15 ` Pavel Machek
2019-05-09 22:34 ` Pavel Machek
2019-04-19 10:15 ` [PATCH v3 10/11] platform/x86: asus-wmi: Switch fan boost mode Yurii Pavlovskyi
2019-04-19 10:15 ` Yurii Pavlovskyi
2019-04-19 10:16 ` [PATCH v3 11/11] platform/x86: asus-wmi: Do not disable keyboard backlight on unloading Yurii Pavlovskyi
2019-04-19 10:16 ` Yurii Pavlovskyi
2019-05-08 13:26 ` [PATCH v3 00/11] asus-wmi: Support of ASUS TUF Gaming series laptops Andy Shevchenko
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