Hi,
On 13/07/2020 15:49:21+0100, Lee Jones wrote:
> 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
The plan is to get rid of that file so you should probably find a better
location.
> @@ -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
>
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
