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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Date: Mon, 04 Mar 2024 11:11:38 +0100
Subject: [PATCH 1/7] backlight: gpio: Simplify with dev_err_probe()
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Message-Id: <20240304-backlight-probe-v1-1-e5f57d0df6e6@linaro.org>
References: <20240304-backlight-probe-v1-0-e5f57d0df6e6@linaro.org>
In-Reply-To: <20240304-backlight-probe-v1-0-e5f57d0df6e6@linaro.org>
To: Lee Jones <lee@kernel.org>, 
 Daniel Thompson <daniel.thompson@linaro.org>, 
 Jingoo Han <jingoohan1@gmail.com>, Helge Deller <deller@gmx.de>
Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, 
 linux-kernel@vger.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/video/backlight/gpio_backlight.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index d28c30b2a35d..9f960f853b6e 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -64,13 +64,9 @@ static int gpio_backlight_probe(struct platform_device *pdev)
 	def_value = device_property_read_bool(dev, "default-on");
 
 	gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS);
-	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;
-	}
+	if (IS_ERR(gbl->gpiod))
+		return dev_err_probe(dev, PTR_ERR(gbl->gpiod),
+				     "Error: The gpios parameter is missing or invalid.\n");
 
 	memset(&props, 0, sizeof(props));
 	props.type = BACKLIGHT_RAW;

-- 
2.34.1