Both the caller and the supplier's source file should have access to
the include file containing the prototypes.
Fixes the following W=1 kernel build warning(s):
drivers/pinctrl/pinctrl-at91.c:1637:6: warning: no previous prototype for
‘at91_pinctrl_gpio_suspend’ [-Wmissing-prototypes]
1637 | void at91_pinctrl_gpio_suspend(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/pinctrl/pinctrl-at91.c:1661:6: warning: no previous prototype for
‘at91_pinctrl_gpio_resume’ [-Wmissing-prototypes]
1661 | void at91_pinctrl_gpio_resume(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~
Cc: Russell King <li...@armlinux.org.uk>
Cc: Nicolas Ferre <nicolas.fe...@microchip.com>
Cc: Alexandre Belloni <alexandre.bell...@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroc...@microchip.com>
Signed-off-by: Lee Jones <lee.jo...@linaro.org>
---
arch/arm/mach-at91/pm.c | 17 ++++++-----------
drivers/pinctrl/pinctrl-at91.c | 1 +
include/linux/platform_data/atmel.h | 5 +++++
3 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c
index 074bde64064e4..59f2a2d6fbbb8 100644
--- a/arch/arm/mach-at91/pm.c
+++ b/arch/arm/mach-at91/pm.c
@@ -25,17 +25,6 @@
#include "generic.h"
#include "pm.h"
-/*
- * FIXME: this is needed to communicate between the pinctrl driver and
- * the PM implementation in the machine. Possibly part of the PM
- * implementation should be moved down into the pinctrl driver and get
- * called as part of the generic suspend/resume path.
- */
-#ifdef CONFIG_PINCTRL_AT91
-extern void at91_pinctrl_gpio_suspend(void);
-extern void at91_pinctrl_gpio_resume(void);
-#endif
-
struct at91_soc_pm {
int (*config_shdwc_ws)(void __iomem *shdwc, u32 *mode, u32 *polarity);
int (*config_pmc_ws)(void __iomem *pmc, u32 mode, u32 polarity);
@@ -325,6 +314,12 @@ static void at91_pm_suspend(suspend_state_t state)
static int at91_pm_enter(suspend_state_t state)
{
#ifdef CONFIG_PINCTRL_AT91
+ /*
+ * FIXME: this is needed to communicate between the pinctrl driver and
+ * the PM implementation in the machine. Possibly part of the PM
+ * implementation should be moved down into the pinctrl driver and get
+ * called as part of the generic suspend/resume path.
+ */
at91_pinctrl_gpio_suspend();
#endif
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index 9c52130876597..37997e5ab0538 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -22,6 +22,7 @@
#include <linux/pinctrl/pinmux.h>
/* Since we request GPIOs from ourself */
#include <linux/pinctrl/consumer.h>
+#include <linux/platform_data/atmel.h>
#include "pinctrl-at91.h"
#include "core.h"
diff --git a/include/linux/platform_data/atmel.h
b/include/linux/platform_data/atmel.h
index 99e6069c5fd89..666ef482ea8c0 100644
--- a/include/linux/platform_data/atmel.h
+++ b/include/linux/platform_data/atmel.h
@@ -28,4 +28,9 @@ static inline int at91_suspend_entering_slow_clock(void)
}
#endif
+#ifdef CONFIG_PINCTRL_AT91
+void at91_pinctrl_gpio_suspend(void);
+void at91_pinctrl_gpio_resume(void);
+#endif
+
#endif /* __ATMEL_H__ */
--
2.25.1
