linux-kernel - [PATCH RESEND] gpiolib: make gpiochip_find_by

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Date:   Tue, 20 Sep 2022 09:17:47 +0800
From:   Jianqun Xu <jay.xu@...k-chips.com>
To:     linus.walleij@...aro.org, brgl@...ev.pl
Cc:     andriy.shevchenko@...ux.intel.com, linux-gpio@...r.kernel.or,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        Jianqun Xu <jay.xu@...k-chips.com>
Subject: [PATCH RESEND] gpiolib: make gpiochip_find_by_name to be common function

Move find_chip_by_name from gpiolib to the gpio/driver.h, also rename to
gpiochip_find_by_name, make it to be a common function.

Signed-off-by: Jianqun Xu <jay.xu@...k-chips.com>
---
 drivers/gpio/gpiolib.c      | 16 ++--------------
 include/linux/gpio/driver.h | 12 ++++++++++++
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cc9c0a12259e..c06334772c47 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -935,18 +935,6 @@ struct gpio_chip *gpiochip_find(void *data,
 }
 EXPORT_SYMBOL_GPL(gpiochip_find);
 
-static int gpiochip_match_name(struct gpio_chip *gc, void *data)
-{
-	const char *name = data;
-
-	return !strcmp(gc->label, name);
-}
-
-static struct gpio_chip *find_chip_by_name(const char *name)
-{
-	return gpiochip_find((void *)name, gpiochip_match_name);
-}
-
 #ifdef CONFIG_GPIOLIB_IRQCHIP
 
 /*
@@ -3660,7 +3648,7 @@ void gpiod_add_hogs(struct gpiod_hog *hogs)
 		 * The chip may have been registered earlier, so check if it
 		 * exists and, if so, try to hog the line now.
 		 */
-		gc = find_chip_by_name(hog->chip_label);
+		gc = gpiochip_find_by_name(hog->chip_label);
 		if (gc)
 			gpiochip_machine_hog(gc, hog);
 	}
@@ -3745,7 +3733,7 @@ static struct gpio_desc *gpiod_find(struct device *dev, const char *con_id,
 			return ERR_PTR(-EPROBE_DEFER);
 		}
 
-		gc = find_chip_by_name(p->key);
+		gc = gpiochip_find_by_name(p->key);
 
 		if (!gc) {
 			/*
diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 6aeea1071b1b..4ed26a7d98ff 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -618,6 +618,18 @@ extern int devm_gpiochip_add_data_with_key(struct device *dev, struct gpio_chip
 extern struct gpio_chip *gpiochip_find(void *data,
 			      int (*match)(struct gpio_chip *gc, void *data));
 
+static int gpiochip_match_name(struct gpio_chip *gc, void *data)
+{
+	const char *name = data;
+
+	return !strcmp(gc->label, name);
+}
+
+static inline struct gpio_chip *gpiochip_find_by_name(const char *name)
+{
+	return gpiochip_find((void *)name, gpiochip_match_name);
+}
+
 bool gpiochip_line_is_irq(struct gpio_chip *gc, unsigned int offset);
 int gpiochip_reqres_irq(struct gpio_chip *gc, unsigned int offset);
 void gpiochip_relres_irq(struct gpio_chip *gc, unsigned int offset);
-- 
2.25.1