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From: Mike Frysinger <vapier@gentoo.org>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>,
	Liam Girdwood <lrg@ti.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org,
	drivers@analog.com, stable@kernel.org
Subject: Re: [PATCH 4/8] firmware: Sigma: Mark firmware strutcs packed
Date: Thu, 24 Nov 2011 12:19:34 -0500	[thread overview]
Message-ID: <201111241219.37220.vapier@gentoo.org> (raw)
In-Reply-To: <1322138908-32127-4-git-send-email-lars@metafoo.de>

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On Thursday 24 November 2011 07:48:23 Lars-Peter Clausen wrote:
> Mark structs which are embedded into the firmware as packed to avoid
> alignment issues.

while in general this makes sense, i designed the struct layout specifically to 
work on any sane system.  that means 8bits align on 8bits, 16bits align on 
16bits, and 32bits align on 32bits.

do you see any place where this is not the case ?  otherwise, using __packed 
by itself doesn't make much sense unless you also change all the loads from 
the struct to the get_unaligned variety which would add useless overhead to 
many embedded parts.

all in all, i'd omit the __packed markings since they're unnecessary.
-mike

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  reply	other threads:[~2011-11-24 17:19 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-24 12:48 [PATCH 1/8] firmware: Sigma: Prevent out of bounds memory access Lars-Peter Clausen
2011-11-24 12:48 ` Lars-Peter Clausen
2011-11-24 12:48 ` [PATCH 2/8] firmware: Sigma: Skip header during CRC generation Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:21   ` Mike Frysinger
2011-11-25  8:55     ` Lars-Peter Clausen
2011-11-25  8:55       ` Lars-Peter Clausen
2011-11-25 20:00       ` Mike Frysinger
2011-11-25 20:00         ` Mike Frysinger
2011-11-28  7:56         ` Lars-Peter Clausen
2011-11-28  7:56           ` Lars-Peter Clausen
2011-11-29  5:11           ` Mike Frysinger
2011-11-29  5:11             ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 3/8] firmware: Sigma: Fix endianess issues Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:20   ` Mike Frysinger
2011-11-24 17:20     ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 4/8] firmware: Sigma: Mark firmware strutcs packed Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:19   ` Mike Frysinger [this message]
2011-11-25 10:48     ` Lars-Peter Clausen
2011-11-25 20:07       ` Mike Frysinger
2011-11-25 20:07         ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 5/8] ASoC: Move SigmaDSP firmware loader to ASoC Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 13:15   ` [PATCH v2 " Lars-Peter Clausen
2011-11-24 13:15     ` Lars-Peter Clausen
2011-11-24 17:31     ` Mike Frysinger
2011-11-24 17:31       ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 6/8] ASoC: SigmaDSP: Provide diagnostic error messages Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:32   ` Mike Frysinger
2011-11-24 17:32     ` Mike Frysinger
2011-11-25  8:59     ` Lars-Peter Clausen
2011-11-25  8:59       ` Lars-Peter Clausen
2011-11-25 20:02       ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 7/8] ASoC: SigmaDSP: Move private structs and functions to c file Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:31   ` Mike Frysinger
2011-11-24 17:31     ` Mike Frysinger
2011-11-24 12:48 ` [PATCH 8/8] ASoC: SigmaDSP: Add regmap support Lars-Peter Clausen
2011-11-24 12:48   ` Lars-Peter Clausen
2011-11-24 17:30   ` Mike Frysinger
2011-11-25  9:00     ` Lars-Peter Clausen
2011-11-25  9:00       ` Lars-Peter Clausen
2011-11-24 17:26 ` [PATCH 1/8] firmware: Sigma: Prevent out of bounds memory access Mike Frysinger
2011-11-24 17:26   ` Mike Frysinger

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