linux-kernel - latest scan for "bad" config variable references in kernel tree

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Date:	Fri, 23 Jul 2010 10:45:10 -0400 (EDT)
From:	"Robert P. J. Day" <rpjday@...shcourse.ca>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: latest scan for "bad" config variable references in kernel tree

  as of 2.6.35-rc6, i ran another scan of the tree, looking for "bad"
config variable references, as in, preprocessor tests of CONFIG_
variables that aren't defined in any Kconfig file that i can see.

  it's all broken down by directory and subdirectory:

http://www.crashcourse.ca/wiki/index.php/Badref_CONFIG_variables

  as an example, here's what showed up under drivers/mmc:

>>>>> MMC_EMBEDDED_SDIO
drivers/mmc/host/msm_sdcc.c:1148:#ifdef CONFIG_MMC_EMBEDDED_SDIO
>>>>> MMC_MSM7X00A_RESUME_IN_WQ
drivers/mmc/host/msm_sdcc.h:238:#ifdef CONFIG_MMC_MSM7X00A_RESUME_IN_WQ
drivers/mmc/host/msm_sdcc.c:1060:#ifdef CONFIG_MMC_MSM7X00A_RESUME_IN_WQ

  as in, there's a test for "CONFIG_MMC_EMBEDDED_SDIO" when there is
no definition of such a variable in a Kconfig file.

  more scanning coming later, but that page covers the whole tree
looking for just that property.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

        Top-notch, inexpensive online Linux/OSS/kernel courses
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
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