On 12/31/24 2:32 PM, Tudor Ambarus wrote: >>> +config EXYNOS_ACPM_PROTOCOL >>> + tristate "Exynos Alive Clock and Power Manager (ACPM) Message Protocol" >>> + depends on ARCH_EXYNOS || COMPILE_TEST >>> + depends on EXYNOS_MBOX >> Is it build time dependency? No || COMPILE_TEST? > There's no build time dependency, I'll drop this line. There's no build time dependency on EXYNOS_MBOX, but there is on MAILBOX: ERROR: modpost: "mbox_request_channel" [drivers/firmware/samsung/acpm-protocol.ko] undefined! ERROR: modpost: "mbox_free_channel" [drivers/firmware/samsung/acpm-protocol.ko] undefined! ERROR: modpost: "mbox_send_message" [drivers/firmware/samsung/acpm-protocol.ko] undefined! ERROR: modpost: "mbox_client_txdone" [drivers/firmware/samsung/acpm-protocol.ko] undefined! Will replace the line with "depends on MAILBOX". Thanks! ta