linux-kernel - [PATCH 2/2] serial: cpm_uart: Fix a COMPILE

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Message-Id: <20230522082048.21216-3-herve.codina@bootlin.com>
Date:   Mon, 22 May 2023 10:20:48 +0200
From:   Herve Codina <herve.codina@...tlin.com>
To:     Herve Codina <herve.codina@...tlin.com>,
        Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org, Mark Brown <broonie@...nel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH 2/2] serial: cpm_uart: Fix a COMPILE_TEST dependency

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@...tlin.com>
Reported-by: kernel test robot <lkp@...el.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
 	help
 	  This driver supports the SCC and SMC serial ports on Motorola 
-- 
2.40.1