From: Lars-Peter Clausen <lars@metafoo.de>
To: Mike Frysinger <vapier@gentoo.org>
Cc: drivers@analog.com, alsa-devel@alsa-project.org,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
linux-kernel@vger.kernel.org, stable@kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Liam Girdwood <lrg@ti.com>
Subject: Re: [PATCH 2/8] firmware: Sigma: Skip header during CRC generation
Date: Fri, 25 Nov 2011 09:55:42 +0100 [thread overview]
Message-ID: <4ECF580E.3060301@metafoo.de> (raw)
In-Reply-To: <201111241222.00189.vapier@gentoo.org>
On 11/24/2011 06:21 PM, Mike Frysinger wrote:
> On Thursday 24 November 2011 07:48:21 Lars-Peter Clausen wrote:
>> The firmware header is not part of the CRC, so skip it. Otherwise the
>> firmware will be rejected due to non-matching CRCs.
>
> that's because you didn't compare to the right value ;). include the CRC ->
> compare to 0. omit the CRC -> compare to the CRC value.
Does this really work if the CRC is inserted somewhere in the middle of the
bytestream?
WARNING: multiple messages have this Message-ID (diff)
From: Lars-Peter Clausen <lars@metafoo.de>
To: Mike Frysinger <vapier@gentoo.org>
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 2/8] firmware: Sigma: Skip header during CRC generation
Date: Fri, 25 Nov 2011 09:55:42 +0100 [thread overview]
Message-ID: <4ECF580E.3060301@metafoo.de> (raw)
In-Reply-To: <201111241222.00189.vapier@gentoo.org>
On 11/24/2011 06:21 PM, Mike Frysinger wrote:
> On Thursday 24 November 2011 07:48:21 Lars-Peter Clausen wrote:
>> The firmware header is not part of the CRC, so skip it. Otherwise the
>> firmware will be rejected due to non-matching CRCs.
>
> that's because you didn't compare to the right value ;). include the CRC ->
> compare to 0. omit the CRC -> compare to the CRC value.
Does this really work if the CRC is inserted somewhere in the middle of the
bytestream?
next prev parent reply other threads:[~2011-11-25 8:54 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 [this message]
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
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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