linux-kernel - RE: [PATCH] ACPICA: make acpi_load

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Date:   Thu, 26 Sep 2019 20:44:33 +0200 (CEST)
From:   Nikolaus Voss <nv@...n.de>
To:     "Schmauss, Erik" <erik.schmauss@...el.com>
cc:     "Shevchenko, Andriy" <andriy.shevchenko@...el.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        "Moore, Robert" <robert.moore@...el.com>,
        Len Brown <lenb@...nel.org>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, Dan Murphy <dmurphy@...com>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "devel@...ica.org" <devel@...ica.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] ACPICA: make acpi_load_table() return table index

On Thu, 26 Sep 2019, Schmauss, Erik wrote:
>> -----Original Message-----
>> From: linux-acpi-owner@...r.kernel.org <linux-acpi-owner@...r.kernel.org>
>> On Behalf Of Shevchenko, Andriy
>> Sent: Thursday, September 26, 2019 9:35 AM
>> To: Schmauss, Erik <erik.schmauss@...el.com>
>> Cc: Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>; Rafael J. Wysocki
>> <rjw@...ysocki.net>; Moore, Robert <robert.moore@...el.com>; Len Brown
>> <lenb@...nel.org>; Jacek Anaszewski <jacek.anaszewski@...il.com>; Pavel
>> Machek <pavel@....cz>; Dan Murphy <dmurphy@...com>; linux-
>> acpi@...r.kernel.org; devel@...ica.org; linux-kernel@...r.kernel.org;
>> nv@...n.de
>> Subject: Re: [PATCH] ACPICA: make acpi_load_table() return table index
>>
>> On Thu, Sep 26, 2019 at 07:09:05PM +0300, Schmauss, Erik wrote:
>>>> -----Original Message-----
>>>> From: Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>
>>>> Sent: Thursday, September 12, 2019 1:08 AM
>>>> To: Shevchenko, Andriy <andriy.shevchenko@...el.com>; Schmauss, Erik
>>>> <erik.schmauss@...el.com>; Rafael J. Wysocki <rjw@...ysocki.net>;
>>>> Moore, Robert <robert.moore@...el.com>
>>>> Cc: Len Brown <lenb@...nel.org>; Jacek Anaszewski
>>>> <jacek.anaszewski@...il.com>; Pavel Machek <pavel@....cz>; Dan
>>>> Murphy <dmurphy@...com>; linux-acpi@...r.kernel.org;
>>>> devel@...ica.org; linux- kernel@...r.kernel.org; nv@...n.de;
>>>> Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>
>>>> Subject: [PATCH] ACPICA: make acpi_load_table() return table index
>>>>
>>> Hi Nikolaus,
>>>
>>>> For unloading an ACPI table, it is necessary to provide the index of the table.
>>>> The method intended for dynamically loading or hotplug addition of
>>>> tables, acpi_load_table(), should provide this information via an
>>>> optional pointer to the loaded table index.
>>>
>>> We'll take this patch for ACPICA upstream
>>
>> Erik,
>>
> Hi Andy,
>
>> how about to have also counterpart to acpi_load_table() which will do what it's
>> done now in acpi_configfs.c via acpi_tb_*() API?
>
> I should have given more details. We decided to add this extra parameter 
> in AcpiLoadTable and we're going to create an AcpiUnloadTable function 
> that will take table index to unload the table (basically the 
> acpi_tb_unload..). Once we do this, you can use table indices with 
> AcpiUnloadTable and AcpiLoadTable.

that's even better news.

Rafael, shall I prepare anything?

Niko

>
> Erik
>>
>> Because it's kinda strange to call acpi_load_table*() and acpi_tb_*() in the
>> same module.
>>
>> --
>> With Best Regards,
>> Andy Shevchenko
>>
>

-- 
Nikolaus Voss - Aastwiete 4 - 22880 Wedel