Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v7.0-rc6 2026-01-06T21:57:15+00:00 2026-01-06T21:57:15+00:00 Nicolas Pitre nico@fluxnic.net 2025-12-15T23:06:54+00:00 urn:sha1:76df6815dab76d7890936dc5f6d91cf7e7f88358 Extend the "depends on" syntax to support conditional dependencies using "depends on X if Y". While functionally equivalent to "depends on X || (Y == n)", "depends on X if Y" is much more readable and makes the kconfig language uniform in supporting the "if <expr>" suffix. This also improves readability for "optional" dependencies, which are the subset of conditional dependencies where X is Y. Previously such optional dependencies had to be expressed as the counterintuitive "depends on X || !X", now this can be represented as "depends on X if X". The change is implemented by converting the "X if Y" syntax into the "X || (Y == n)" syntax during "depends on" token processing. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> [Graham Roff: Rewrote commit message, updated patch, added tests] Signed-off-by: Graham Roff <grahamr@qti.qualcomm.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20251215-kconfig_conditional_deps-v3-1-59519af0a5df@qti.qualcomm.com [nathan: Minor adjustments to spacing] Signed-off-by: Nathan Chancellor <nathan@kernel.org>