Hi Ralf, your commit 1f1786e60b53 ("MIPS/IRQCHIP: Move irq_chip from arch/mips to drivers/irqchip.") is in today's linux-next tree (i.e., next-20150601). It renames the Kconfig option IRQ_CPU to IRQ_MIPS_CPU, but misses to rename a few Kconfig selects (see git grep) in arch/mips. If you agree, I can send a trivial patch that renames those remainders? I detected the issue with ./scripts/checkkconfigsymbols.py by diffing the last and today's linux tree. Some advertisement for a small tool I started a few month a go, which is made for such cases. With vgrep [1] you can grep for symbols in the current directory tree and afterwards open specific lines in your editor. It's more or less a comfortable wrapper around (git) grep. I use it a lot to study source code as well as to manage code changes. The most prominent user I know is Greg KH who uses it as a replacement for cgvg. Kind regards, Valentin [1] https://github.com/vrothberg/vgrep