Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Arnd Bergmann <arnd@arndb.de>
To:     Sean Wang <sean.wang@kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Light Hsieh <light.hsieh@mediatek.com>
Cc:     Arnd Bergmann <arnd@arndb.de>, Sean Wang <sean.wang@mediatek.com>,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Subject: [PATCH] pinctrl: mediatek: fix mtk_eint link error
Date:   Wed, 29 Apr 2020 15:24:22 +0200
Message-Id: <20200429132443.1295194-1-arnd@arndb.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

In a configuration with CONFIG_PINCTRL_MTK_MOORE=y and CONFIG_PINCTRL_MTK_PARIS=m,
we end up with the mtk_eint driver as a loadable module that cannot be
linked from built-in code:

aarch64-linux-ld: drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.o: in function `mtk_build_eint':
(.text+0x304): undefined reference to `mtk_eint_do_init'
aarch64-linux-ld: drivers/pinctrl/mediatek/pinctrl-moore.o: in function `mtk_gpio_set_config':
pinctrl-moore.c:(.text+0xf80): undefined reference to `mtk_eint_set_debounce'
aarch64-linux-ld: drivers/pinctrl/mediatek/pinctrl-moore.o: in function `mtk_gpio_to_irq':
pinctrl-moore.c:(.text+0x1028): undefined reference to `mtk_eint_find_irq'

Simplify the Kconfig logic to always select EINT_MTK when it is needed, and
remove the 'default' statements.

Fixes: 8174a8512e3e ("pinctrl: mediatek: make MediaTek pinctrl v2 driver ready for buidling loadable module")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/pinctrl/mediatek/Kconfig    |  4 +---
 drivers/pinctrl/mediatek/mtk-eint.h | 28 ----------------------------
 2 files changed, 1 insertion(+), 31 deletions(-)

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
index f32d3644c509..b6a8d91f4885 100644
--- a/drivers/pinctrl/mediatek/Kconfig
+++ b/drivers/pinctrl/mediatek/Kconfig
@@ -7,8 +7,6 @@ config EINT_MTK
 	depends on PINCTRL_MTK || PINCTRL_MTK_MOORE || PINCTRL_MTK_PARIS || COMPILE_TEST
 	select GPIOLIB
 	select IRQ_DOMAIN
-	default y if PINCTRL_MTK || PINCTRL_MTK_MOORE
-	default PINCTRL_MTK_PARIS
 
 config PINCTRL_MTK
 	bool
@@ -20,6 +18,7 @@ config PINCTRL_MTK
 	select OF_GPIO
 
 config PINCTRL_MTK_V2
+	select EINT_MTK
 	tristate
 
 config PINCTRL_MTK_MOORE
@@ -38,7 +37,6 @@ config PINCTRL_MTK_PARIS
 	select PINMUX
 	select GENERIC_PINCONF
 	select GPIOLIB
-	select EINT_MTK
 	select OF_GPIO
 	select PINCTRL_MTK_V2
 
diff --git a/drivers/pinctrl/mediatek/mtk-eint.h b/drivers/pinctrl/mediatek/mtk-eint.h
index 48468d0fae68..f40dab50a5f3 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.h
+++ b/drivers/pinctrl/mediatek/mtk-eint.h
@@ -68,7 +68,6 @@ struct mtk_eint {
 	const struct mtk_eint_xt *gpio_xlate;
 };
 
-#if IS_ENABLED(CONFIG_EINT_MTK)
 int mtk_eint_do_init(struct mtk_eint *eint);
 int mtk_eint_do_suspend(struct mtk_eint *eint);
 int mtk_eint_do_resume(struct mtk_eint *eint);
@@ -76,31 +75,4 @@ int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
 			  unsigned int debounce);
 int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n);
 
-#else
-static inline int mtk_eint_do_init(struct mtk_eint *eint)
-{
-	return -EOPNOTSUPP;
-}
-
-static inline int mtk_eint_do_suspend(struct mtk_eint *eint)
-{
-	return -EOPNOTSUPP;
-}
-
-static inline int mtk_eint_do_resume(struct mtk_eint *eint)
-{
-	return -EOPNOTSUPP;
-}
-
-static inline int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_n,
-			  unsigned int debounce)
-{
-	return -EOPNOTSUPP;
-}
-
-static inline int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
-{
-	return -EOPNOTSUPP;
-}
-#endif
 #endif /* __MTK_EINT_H */
-- 
2.26.0