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From: "Michał Kępień" <kernel@kempniu.pl>
To: Darren Hart <dvhart@infradead.org>
Cc: "Matthew Garrett" <mjg59@srcf.ucam.org>,
	"Pali Rohár" <pali.rohar@gmail.com>,
	"Richard Purdie" <rpurdie@rpsys.net>,
	"Jacek Anaszewski" <j.anaszewski@samsung.com>,
	platform-driver-x86@vger.kernel.org, linux-leds@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 07/16] dell-smbios: don't return an SMBIOS buffer from dell_smbios_send_request()
Date: Tue, 9 Feb 2016 14:27:36 +0100	[thread overview]
Message-ID: <20160209132736.GA7443@eudyptula.hq.kempniu.pl> (raw)
In-Reply-To: <20160208184456.GM1779@malice.jf.intel.com>

> > An SMBIOS buffer pointer does not need to be returned by
> > dell_smbios_send_request(), because SMBIOS call results are stored in
> > the buffer passed as input.
> 
> This should come before 6/16, update the commit message to reflect the module
> exported buffer (not the one passed as input), or possibly just merge this patch
> and 6/16 as correcting the use of SMBIOS buffer within the module.

I have only now noticed that I phrased the commit message for this patch
rather unfortunately as it inappropriately conveyed my reasoning.  What
I meant by "the buffer passed as input" was not "the buffer passed as an
argument to dell_smbios_send_request()", but rather "the buffer passed
to the SMI handler".  In other words, there is no reason to return a
buffer from dell_smbios_send_request(), because each caller will simply
find their output in the same buffer they used to provide input (no
matter whether the latter is passed as a function argument or accessed
using a module-wide variable).

Anyway, as even the above explanation is hardly a stellar demonstration
of clarity, I believe your idea of resolving this issue may simply be
the best one, thanks.

-- 
Best regards,
Michał Kępień

  reply	other threads:[~2016-02-09 13:27 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-22 14:27 [PATCH v2 00/16] Common Dell SMBIOS API Michał Kępień
2016-01-22 14:27 ` [PATCH v2 01/16] dell-laptop: extract SMBIOS-related code to a separate module Michał Kępień
2016-01-24  2:16   ` kbuild test robot
2016-01-26 13:33     ` Michał Kępień
2016-01-22 14:27 ` [PATCH v2 02/16] dell-smbios: rename get_buffer() to dell_smbios_get_buffer() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 03/16] dell-smbios: rename clear_buffer() to dell_smbios_clear_buffer() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 04/16] dell-smbios: rename release_buffer() to dell_smbios_release_buffer() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 05/16] dell-smbios: rename dell_send_request() to dell_smbios_send_request() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 06/16] dell-smbios: don't pass an SMBIOS buffer " Michał Kępień
2016-01-22 14:27 ` [PATCH v2 07/16] dell-smbios: don't return an SMBIOS buffer from dell_smbios_send_request() Michał Kępień
2016-02-08 18:44   ` Darren Hart
2016-02-09 13:27     ` Michał Kępień [this message]
2016-02-09 16:50       ` Darren Hart
2016-02-09 17:34         ` Michał Kępień
2016-01-22 14:27 ` [PATCH v2 08/16] dell-smbios: return the SMBIOS buffer from dell_smbios_get_buffer() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 09/16] dell-smbios: make the SMBIOS buffer static Michał Kępień
2016-01-22 14:27 ` [PATCH v2 10/16] dell-smbios: implement new function for finding DMI table 0xDA tokens Michał Kępień
2016-01-22 14:27 ` [PATCH v2 11/16] dell-laptop: use dell_smbios_find_token() instead of find_token_id() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 12/16] dell-laptop: use dell_smbios_find_token() instead of find_token_location() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 13/16] dell-smbios: remove find_token_{id,location}() Michał Kępień
2016-01-22 14:27 ` [PATCH v2 14/16] dell-smbios: make da_tokens static Michał Kępień
2016-01-22 14:27 ` [PATCH v2 15/16] dell-led: use dell_smbios_find_token() for finding mic DMI tokens Michał Kępień
2016-01-22 14:27 ` [PATCH v2 16/16] dell-led: use dell_smbios_send_request() for performing SMBIOS calls Michał Kępień
2016-01-22 14:48 ` [PATCH v2 00/16] Common Dell SMBIOS API Pali Rohár
2016-02-07 20:34   ` Darren Hart
2016-02-08 19:20   ` Darren Hart
2016-02-08 19:29     ` Greg Kroah-Hartman
2016-02-08 20:46       ` Darren Hart
2016-02-08 21:04         ` Pali Rohár
2016-02-08 21:31           ` Darren Hart
2016-02-09 14:15         ` Michał Kępień
2016-02-08 19:30     ` Lukas Wunner
2016-02-08 20:43       ` Darren Hart

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