From: Paul Bolle <pebolle@tiscali.nl>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] regmap: silence GCC warning
Date: Mon, 01 Oct 2012 21:08:57 +0200 [thread overview]
Message-ID: <1349118537.1414.22.camel@x61.thuisdomein> (raw)
In-Reply-To: <20121001113927.GJ4360@opensource.wolfsonmicro.com>
On Mon, 2012-10-01 at 12:39 +0100, Mark Brown wrote:
> I assume this is a regression they've introduced in 4.7.
For what it's worth, GCC 4.6 apparently shows identical behavior.
The code that triggers this warning was (basically) introduced in commit
b8fb5ab156055b745254609f4635fcfd6b7dabc8 ("regmap: Support raw reads
from cached registers"). The first release shipping that commit was
v3.4. The log of a build of v3.4 using the oldest version of GCC (that
Fedora used to build v3.4) I could find also contains this warning [0].
They used gcc-4.6.3-2.fc16.x86_64 in that build [1].
Perhaps I'll stumble on some build logs of v3.4 for which earlier
versions of GCC were used. That might show whether or not earlier
releases of GCC also print a warning for this code.
Paul Bolle
[0] http://kojipkgs.fedoraproject.org/packages/kernel/3.4.2/1.fc16/data/logs/x86_64/build.log
[1] http://kojipkgs.fedoraproject.org/packages/kernel/3.4.2/1.fc16/data/logs/x86_64/root.log
next prev parent reply other threads:[~2012-10-01 19:09 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-30 10:15 Paul Bolle
2012-10-01 10:03 ` Mark Brown
2012-10-01 10:16 ` Paul Bolle
2012-10-01 10:19 ` Mark Brown
2012-10-01 10:32 ` Paul Bolle
2012-10-01 11:39 ` Mark Brown
2012-10-01 19:08 ` Paul Bolle [this message]
2012-10-01 19:11 ` Mark Brown
2012-10-03 0:11 ` Valdis.Kletnieks
2012-10-03 7:23 ` Paul Bolle
2012-10-03 11:06 ` Mark Brown
2012-10-05 22:20 ` Valdis.Kletnieks
2012-10-06 8:53 ` Mark Brown
2012-10-06 9:57 ` Paul Bolle
2012-10-08 1:14 ` Mark Brown
2012-10-08 20:06 ` [PATCH v2] " Paul Bolle
2012-10-12 6:26 ` Mark Brown
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