linux-kernel - [PATCH 03/12] backlight: gpio: pull the non-pdata device probing code into probe()

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Date:   Tue, 25 Jun 2019 18:34:25 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        David Lechner <david@...hnology.com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH 03/12] backlight: gpio: pull the non-pdata device probing code into probe()

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

There's no good reason to have the generic probing code in a separate
routine. This function is short and is inlined by the compiler anyway.
Move it into probe under the pdata-specific part.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/video/backlight/gpio_backlight.c | 39 ++++++++----------------
 1 file changed, 13 insertions(+), 26 deletions(-)

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index 8adbc8d75097..89e10bccfd3c 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -54,30 +54,6 @@ static const struct backlight_ops gpio_backlight_ops = {
 	.check_fb	= gpio_backlight_check_fb,
 };
 
-static int gpio_backlight_probe_prop(struct platform_device *pdev,
-				     struct gpio_backlight *gbl)
-{
-	struct device *dev = &pdev->dev;
-	enum gpiod_flags flags;
-	int ret;
-
-	gbl->def_value = device_property_read_bool(dev, "default-on");
-	flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
-
-	gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
-	if (IS_ERR(gbl->gpiod)) {
-		ret = PTR_ERR(gbl->gpiod);
-
-		if (ret != -EPROBE_DEFER) {
-			dev_err(dev,
-				"Error: The gpios parameter is missing or invalid.\n");
-		}
-		return ret;
-	}
-
-	return 0;
-}
-
 static int gpio_backlight_probe(struct platform_device *pdev)
 {
 	struct gpio_backlight_platform_data *pdata =
@@ -86,6 +62,7 @@ static int gpio_backlight_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct backlight_device *bl;
 	struct gpio_backlight *gbl;
+	enum gpiod_flags flags;
 	int ret;
 
 	gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL);
@@ -116,9 +93,19 @@ static int gpio_backlight_probe(struct platform_device *pdev)
 		if (!gbl->gpiod)
 			return -EINVAL;
 	} else {
-		ret = gpio_backlight_probe_prop(pdev, gbl);
-		if (ret)
+		gbl->def_value = device_property_read_bool(dev, "default-on");
+		flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
+
+		gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
+		if (IS_ERR(gbl->gpiod)) {
+			ret = PTR_ERR(gbl->gpiod);
+
+			if (ret != -EPROBE_DEFER) {
+				dev_err(dev,
+					"Error: The gpios parameter is missing or invalid.\n");
+			}
 			return ret;
+		}
 	}
 
 	memset(&props, 0, sizeof(props));
-- 
2.21.0