[PATCH] pinctrl: sp7021: fix unused function warning

[PATCH] pinctrl: sp7021: fix unused function warning

[Arnd Bergmann]

From: Arnd Bergmann <arnd@arndb.de>

sppctl_gpio_inv_get is only used from the debugfs code inside
of an #ifdef, so we get a warning without that:

drivers/pinctrl/sunplus/sppctl.c:393:12: error: 'sppctl_gpio_inv_get' defined but not used [-Werror=unused-function]
  393 | static int sppctl_gpio_inv_get(struct gpio_chip *chip, unsigned int offset)
      |            ^~~~~~~~~~~~~~~~~~~

Replace the #ifdef with an IS_ENABLED() check that avoids the warning.

Fixes: aa74c44be19c ("pinctrl: Add driver for Sunplus SP7021")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/pinctrl/sunplus/sppctl.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/pinctrl/sunplus/sppctl.c b/drivers/pinctrl/sunplus/sppctl.c
index 2b3335ab56c6..25101293268f 100644
--- a/drivers/pinctrl/sunplus/sppctl.c
+++ b/drivers/pinctrl/sunplus/sppctl.c
@@ -499,7 +499,6 @@ static int sppctl_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
 	return 0;
 }
 
-#ifdef CONFIG_DEBUG_FS
 static void sppctl_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 {
 	const char *label;
@@ -521,7 +520,6 @@ static void sppctl_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 		seq_puts(s, "\n");
 	}
 }
-#endif
 
 static int sppctl_gpio_new(struct platform_device *pdev, struct sppctl_pdata *pctl)
 {
@@ -550,9 +548,8 @@ static int sppctl_gpio_new(struct platform_device *pdev, struct sppctl_pdata *pc
 	gchip->get              = sppctl_gpio_get;
 	gchip->set              = sppctl_gpio_set;
 	gchip->set_config       = sppctl_gpio_set_config;
-#ifdef CONFIG_DEBUG_FS
-	gchip->dbg_show         = sppctl_gpio_dbg_show;
-#endif
+	gchip->dbg_show         = IS_ENABLED(CONFIG_DEBUG_FS) ?
+				  sppctl_gpio_dbg_show : NULL;
 	gchip->base             = -1;
 	gchip->ngpio            = sppctl_gpio_list_sz;
 	gchip->names            = sppctl_gpio_list_s;
-- 
2.35.1

Re: [PATCH] pinctrl: sp7021: fix unused function warning

[Linus Walleij]

On Thu, Dec 15, 2022 at 5:38 PM Arnd Bergmann <arnd@kernel.org> wrote:

> From: Arnd Bergmann <arnd@arndb.de>
>
> sppctl_gpio_inv_get is only used from the debugfs code inside
> of an #ifdef, so we get a warning without that:
>
> drivers/pinctrl/sunplus/sppctl.c:393:12: error: 'sppctl_gpio_inv_get' defined but not used [-Werror=unused-function]
>   393 | static int sppctl_gpio_inv_get(struct gpio_chip *chip, unsigned int offset)
>       |            ^~~~~~~~~~~~~~~~~~~
>
> Replace the #ifdef with an IS_ENABLED() check that avoids the warning.
>
> Fixes: aa74c44be19c ("pinctrl: Add driver for Sunplus SP7021")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Patch applied!

Yours,
Linus Walleij

Re: [PATCH] pinctrl: sp7021: fix unused function warning

[Andy Shevchenko]

On Thu, Dec 15, 2022 at 05:38:10PM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> sppctl_gpio_inv_get is only used from the debugfs code inside
> of an #ifdef, so we get a warning without that:
> 
> drivers/pinctrl/sunplus/sppctl.c:393:12: error: 'sppctl_gpio_inv_get' defined but not used [-Werror=unused-function]
>   393 | static int sppctl_gpio_inv_get(struct gpio_chip *chip, unsigned int offset)
>       |            ^~~~~~~~~~~~~~~~~~~
> 
> Replace the #ifdef with an IS_ENABLED() check that avoids the warning.

I;m wondering why we can't use PTR_IF() here and in similar cases...

-- 
With Best Regards,
Andy Shevchenko