[PATCH] pinctrl: sh-pfc: Use dev_notice_once() instead of open-coding

[Geert Uytterhoeven <geert+renesas@xxxxxxxxx>]

At the time of commit 9a643c9a11259955 ("sh-pfc: Convert message
printing from pr_* to dev_*"), the dev_*_once() variants didn't exist
yet, so the once behavior was open-coded.

Since commit e135303bd5bebcd2 ("device: Add dev_<level>_once variants")
they do, so "revert" to the good practice of using a helper.

Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
To be queued in sh-pfc-for-v5.4.

 drivers/pinctrl/sh-pfc/gpio.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/pinctrl/sh-pfc/gpio.c b/drivers/pinctrl/sh-pfc/gpio.c
index 97c1332c1045739a..64c09aa374ae011f 100644
--- a/drivers/pinctrl/sh-pfc/gpio.c
+++ b/drivers/pinctrl/sh-pfc/gpio.c
@@ -255,18 +255,13 @@ static int gpio_pin_setup(struct sh_pfc_chip *chip)
 #ifdef CONFIG_PINCTRL_SH_FUNC_GPIO
 static int gpio_function_request(struct gpio_chip *gc, unsigned offset)
 {
-	static bool __print_once;
 	struct sh_pfc *pfc = gpio_to_pfc(gc);
 	unsigned int mark = pfc->info->func_gpios[offset].enum_id;
 	unsigned long flags;
 	int ret;
 
-	if (!__print_once) {
-		dev_notice(pfc->dev,
-			   "Use of GPIO API for function requests is deprecated."
-			   " Convert to pinctrl\n");
-		__print_once = true;
-	}
+	dev_notice_once(pfc->dev,
+			"Use of GPIO API for function requests is deprecated, convert to pinctrl\n");
 
 	if (mark == 0)
 		return -EINVAL;
-- 
2.17.1