Hi-- On 5/31/22 05:14, Muni Sekhar wrote: > Hi all, > > menuconfig SOUNDWIRE > tristate "SoundWire support" > depends on ACPI || OF > > "depends on ACPI || OF" mean, SOUNDWIRE depends on both ACPI and OF modules? > "||" is logical OR, so SOUNDWIRE depends on either ACPI or OF (or both of them can be enabled). > > config SOUNDWIRE_QCOM > tristate "Qualcomm SoundWire Master driver" > imply SLIMBUS > > What does "imply SLIMBUS" mean? See Documentation/kbuild/kconfig-language.rst: - weak reverse dependencies: "imply" <symbol> ["if" <expr>] This is similar to "select" as it enforces a lower limit on another symbol except that the "implied" symbol's value may still be set to n from a direct dependency or with a visible prompt. So (in your example) SLIMBUS is desired but not required. That means that the code that is built for SOUNDWIRE_QCOM probably needs to use IS_REACHABLE(CONFIG_SLIMBUS) to see if that SLIMBUS code is available at build time. HTH. -- ~Randy _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
