In a COMPILE_TEST configuration, the cpm_uart driver uses symbols from the cpm_uart_cpm2.c file. This file is compiled only when CONFIG_CPM2 is set. Without this dependency, the linker fails with some missing symbols for COMPILE_TEST configuration that needs SERIAL_CPM without enabling CPM2. Signed-off-by: Herve Codina <herve.codina@xxxxxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Link: https://lore.kernel.org/oe-kbuild-all/202305160221.9XgweObz-lkp@xxxxxxxxx/ Fixes: e3e7b13bffae ("serial: allow COMPILE_TEST for some drivers") --- drivers/tty/serial/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 625358f44419..68a9d9db9144 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -769,7 +769,7 @@ config SERIAL_PMACZILOG_CONSOLE config SERIAL_CPM tristate "CPM SCC/SMC serial port support" - depends on CPM2 || CPM1 || (PPC32 && COMPILE_TEST) + depends on CPM2 || CPM1 || (PPC32 && CPM2 && COMPILE_TEST) select SERIAL_CORE help This driver supports the SCC and SMC serial ports on Motorola -- 2.40.1
