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    SubjectRe: linux-next: build warnings after merge of the kbuild-current tree
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    On Wed, 2010-10-06 at 12:13 +0100, Michal Marek wrote:
    > On 6.10.2010 02:44, Stephen Rothwell wrote:
    > > After merging the kbuild-current tree, today's (and yesterday's)
    > > linux-next build (x86_64 allmodconfig and other builds as well) produced
    > > these warnings:
    > >
    > > warning: [...] selects I2C_ALGOBIT which has unmet direct dependencies (I2C && !I2C_HELPER_AUTO)
    > > [...]
    > > warning: [...] selects VIDEO_TVAUDIO which has unmet direct dependencies (MEDIA_SUPPORT && VIDEO_CAPTURE_DRIVERS && !VIDEO_HELPER_CHIPS_AUTO && VIDEO_V4L2 && I2C)
    > >
    > > After reverting commit ff5ff6060bf880aac233e68dd666cbe9e39ec620
    > > ("kconfig: delay symbol direct dependency initialization") it produces no
    > > such warnings.
    >
    > I'm aware of them. I'm talking with Jean Delvare about fixing the I2C
    > warnings, see http://lkml.org/lkml/2010/10/5/83. The drivers/media/video
    > warnings will need the same care. I don't know if we manage to fix these
    > in time, so maybe the kconfig fix will have to way for 2.6.36.1.

    The kconfig commit ff5ff6060 fixes a bug with commit 246cf9c26 which was
    using some structures after they were freed. Because of the bug, it just
    happened that it wasn't showing these kconfig warnings. A worst thing is
    kbuild segfaulting or getting into an infinite loop (as reported/fixed
    by Arnaud).

    I think the above commit is still needed before 2.6.36 and maybe push a
    drivers/media/video warnings in 2.6.36.1.

    Thanks.

    --
    Catalin



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