08.07.2019 15:38, Arnd Bergmann пишет:
> Without this header, some configurations now run into a build failure:
>
> drivers/gpio/gpio-tegra.c:665:2: error: implicit declaration of function 'debugfs_create_file'
> [-Werror,-Wimplicit-function-declaration]
> debugfs_create_file("tegra_gpio", 0444, NULL, tgi,
> ^
> drivers/gpio/gpio-tegra.c:665:2: error: this function declaration is not a prototype [-Werror,-Wstrict-prototypes]
> drivers/gpio/gpio-tegra.c:666:9: error: use of undeclared identifier 'tegra_dbg_gpio_fops'
>
> Remove the #ifdef here and let the compiler drop the unused
> functions itself when debugfs_create_file() is an empty inline
> function.
>
> Fixes: a4de43049a1d ("gpio: tegra: Clean-up debugfs initialisation")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> ---
> drivers/gpio/gpio-tegra.c | 7 ++-----
> 1 file changed, 2 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
> index 59b99d8c3647..dbcecbe5f52f 100644
> --- a/drivers/gpio/gpio-tegra.c
> +++ b/drivers/gpio/gpio-tegra.c
> @@ -9,6 +9,7 @@
> * Erik Gilling <konkers@xxxxxxxxxx>
> */
>
> +#include <linux/debugfs.h>
> #include <linux/err.h>
> #include <linux/init.h>
> #include <linux/irq.h>
> @@ -22,6 +23,7 @@
> #include <linux/irqchip/chained_irq.h>
> #include <linux/pinctrl/consumer.h>
> #include <linux/pm.h>
> +#include <linux/seq_file.h>
>
> #define GPIO_BANK(x) ((x) >> 5)
> #define GPIO_PORT(x) (((x) >> 3) & 0x3)
> @@ -508,10 +510,6 @@ static int tegra_gpio_irq_set_wake(struct irq_data *d, unsigned int enable)
> }
> #endif
>
> -#ifdef CONFIG_DEBUG_FS
> -
> -#include <linux/debugfs.h>
> -#include <linux/seq_file.h>
>
> static int tegra_dbg_gpio_show(struct seq_file *s, void *unused)
> {
> @@ -538,7 +536,6 @@ static int tegra_dbg_gpio_show(struct seq_file *s, void *unused)
> }
>
> DEFINE_SHOW_ATTRIBUTE(tegra_dbg_gpio);
> -#endif
>
> static const struct dev_pm_ops tegra_gpio_pm_ops = {
> SET_SYSTEM_SLEEP_PM_OPS(tegra_gpio_suspend, tegra_gpio_resume)
>
The offending patch should be reverted already, please see [1].
[1] https://patchwork.ozlabs.org/patch/1128007/#2210871
