Hi all!
As part of the VAMOS[0] research project at the University of Erlangen we are looking at multiple integrity errors in linux' configuration system.
I've been running a check on the sound/ sourcetree for config Items not defined in Kconfig and found such a case. Sourcecode blocks depending on these Items are not reachable from a vanilla kernel -- dead code. I've seen such dead blocks made on purpose e.g. while integrating new features into the kernel but generally they're just useless.
There are two ifdef blocks, which do a check on CONFIG_SFFSDR_FPGA, but this flag isn't defined anywhere. There is an select in sound/soc/davinci[1], but Kconfig doesn't define the symbol, if there isn't a config option for it. So this blocks can never be selected. I don't think this is intended, so i didn't wrote a patch. Please just notice it.
Regards Christian Dietrich
[0] http://vamos1.informatik.uni-erlangen.de/ [1] sound/soc/davinci/Kconfig: select SFFSDR_FPGA sound/soc/davinci/davinci-sffsdr.c:#ifdef CONFIG_SFFSDR_FPGA sound/soc/davinci/davinci-sffsdr.c:#ifndef CONFIG_SFFSDR_FPGA sound/soc/davinci/davinci-sffsdr.c:#ifndef CONFIG_SFFSDR_FPGA