On 04/03/2024 11:40, Daniel Thompson wrote:

On Mon, Mar 04, 2024 at 11:11:38AM +0100, Krzysztof Kozlowski wrote:

quoted

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 <redacted>
---
 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");

The "Error: " should be removed from the string. dev_err_probe() already prints
that.

Sure.

Best regards,
Krzysztof