[PATCH 2/2] serial: cpm_uart: Fix a COMPILE_TEST dependency

Herve Codina herve.codina at bootlin.com
Mon May 22 18:20:48 AEST 2023

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

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 at bootlin.com>
Reported-by: kernel test robot <lkp at intel.com>
Link: https://lore.kernel.org/oe-kbuild-all/202305160221.9XgweObz-lkp@intel.com/
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
 	  This driver supports the SCC and SMC serial ports on Motorola 

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