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From: "Michał Kępień" <kernel@kempniu.pl>
To: "Pali Rohár" <pali.rohar@gmail.com>
Cc: Darren Hart <dvhart@infradead.org>,
	Matthew Garrett <mjg59@srcf.ucam.org>,
	Richard Purdie <rpurdie@rpsys.net>,
	Jacek Anaszewski <j.anaszewski@samsung.com>,
	Alex Hung <alex.hung@canonical.com>,
	platform-driver-x86@vger.kernel.org, linux-leds@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/14] dell-laptop: extract SMBIOS-related code to a separate module
Date: Tue, 9 Feb 2016 14:58:46 +0100	[thread overview]
Message-ID: <20160209135846.GB7443@eudyptula.hq.kempniu.pl> (raw)
In-Reply-To: <20160209083303.GN30075@pali>

> > Assuming the above is an accurate view, I don't see any reason to go beyond the
> > minimal change to the existing SMBIOS code to make it a usable API. If the need
> > arises, we can always make such optimizations and performance improvements
> > later. This is an internal API and we can change it whenever we need to so long
> > as we update the call sites.
> 
> Problem is that now smbios code from dell-laptop.c is moved into
> dell-smbios.c and dell-smbios.h and LED subsystem starts using
> dell-smbios.h. In this case I'm thinking that we have something like API
> usable by other modules/subsystem. And I'm thinking if it is not better
> to create "correct" API now instead rewriting code in LED and platform
> subsystem again later... As this API needs to provide just 1 function,
> send command to Dell SMBIOS I think that API is still minimal. Currently
> we have another two functions alloc/free buffer (needed for send).

Pali, forgive me, but I fail to understand your last two sentences.
Currently, we don't have functions for allocating/freeing the SMBIOS
buffer as it is allocated in dell_init() (or dell_smbios_init() after
applying this patch series) and freed in dell_(smbios_)exit().

In your previous messages [1][2], you suggested that we could allocate a
separate SMBIOS buffer for each caller or copy input parameters from
caller-allocated memory into a module-wide SMBIOS buffer before
performing the SMBIOS request.  Did you just mean to remind Darren of
these ideas or did you have something else on your mind?  If the latter,
could you please try rephrasing the last two sentences of your message?

[1] http://www.spinics.net/lists/platform-driver-x86/msg08260.html
[2] http://www.spinics.net/lists/platform-driver-x86/msg08268.html

-- 
Best regards,
Michał Kępień

  reply	other threads:[~2016-02-09 13:58 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-12 14:02 [PATCH 00/14] Common Dell SMBIOS API Michał Kępień
2016-01-12 14:02 ` [PATCH 01/14] dell-laptop: extract SMBIOS-related code to a separate module Michał Kępień
2016-01-16 15:19   ` Pali Rohár
2016-01-18 10:34     ` Michał Kępień
2016-01-20  9:21     ` Michał Kępień
2016-01-21  8:35       ` Pali Rohár
2016-01-21 13:06         ` Michał Kępień
2016-01-21 13:14           ` Pali Rohár
2016-01-21 13:39             ` Michał Kępień
2016-02-08 21:42               ` Darren Hart
2016-02-09  8:33                 ` Pali Rohár
2016-02-09 13:58                   ` Michał Kępień [this message]
2016-02-09 16:51                   ` Darren Hart
2016-02-09 19:12                     ` Pali Rohár
2016-02-10 23:03                       ` Darren Hart
2016-01-12 14:02 ` [PATCH 02/14] dell-smbios: don't pass a buffer to dell_send_request() Michał Kępień
2016-01-12 14:02 ` [PATCH 03/14] dell-smbios: rename buffer to dell_smbios_buffer Michał Kępień
2016-01-12 14:02 ` [PATCH 04/14] dell-smbios: rename clear_buffer() to dell_smbios_clear_buffer() Michał Kępień
2016-01-12 14:02 ` [PATCH 05/14] dell-smbios: rename get_buffer() to dell_smbios_get_buffer() Michał Kępień
2016-01-12 14:02 ` [PATCH 06/14] dell-smbios: rename release_buffer() to dell_smbios_release_buffer() Michał Kępień
2016-01-12 14:02 ` [PATCH 07/14] dell-smbios: rename dell_send_request() to dell_smbios_send_request() Michał Kępień
2016-01-12 14:02 ` [PATCH 08/14] dell-smbios: implement new function for finding DMI table 0xDA tokens Michał Kępień
2016-01-12 14:02 ` [PATCH 09/14] dell-laptop: use dell_smbios_find_token() instead of find_token_id() Michał Kępień
2016-01-12 14:02 ` [PATCH 10/14] dell-laptop: use dell_smbios_find_token() instead of find_token_location() Michał Kępień
2016-01-12 14:02 ` [PATCH 11/14] dell-smbios: remove find_token_{id,location}() Michał Kępień
2016-01-12 14:02 ` [PATCH 12/14] dell-smbios: make da_tokens static Michał Kępień
2016-01-12 14:02 ` [PATCH 13/14] dell-led: use dell_smbios_find_token() for finding mic DMI tokens Michał Kępień
2016-01-21 10:52   ` Jacek Anaszewski
2016-01-21 15:00     ` Michał Kępień
2016-01-21 15:42       ` Jacek Anaszewski
2016-01-12 14:03 ` [PATCH 14/14] dell-led: use dell_smbios_send_request() for SMBIOS requests Michał Kępień
2016-01-14 22:43 ` [PATCH 00/14] Common Dell SMBIOS API Darren Hart

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