linux-kernel - [PATCH v1 1/1] leds: sun50i-a100: Use match

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Date: Fri, 26 Apr 2024 18:25:15 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Samuel Holland <samuel@...lland.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-leds@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Cc: Pavel Machek <pavel@....cz>,
	Lee Jones <lee@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>
Subject: [PATCH v1 1/1] leds: sun50i-a100: Use match_string() helper to simplify the code

match_string() returns the array index of a matching string.
Use it instead of the open-coded implementation.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/leds/leds-sun50i-a100.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/leds/leds-sun50i-a100.c b/drivers/leds/leds-sun50i-a100.c
index 62d21c3a3575..119eff9471f0 100644
--- a/drivers/leds/leds-sun50i-a100.c
+++ b/drivers/leds/leds-sun50i-a100.c
@@ -252,18 +252,16 @@ static int sun50i_a100_ledc_parse_format(struct device *dev,
 					 struct sun50i_a100_ledc *priv)
 {
 	const char *format = "grb";
-	u32 i;
+	int i;
 
 	device_property_read_string(dev, "allwinner,pixel-format", &format);
 
-	for (i = 0; i < ARRAY_SIZE(sun50i_a100_ledc_formats); i++) {
-		if (!strcmp(format, sun50i_a100_ledc_formats[i])) {
-			priv->format = i;
-			return 0;
-		}
-	}
+	i = match_string(sun50i_a100_ledc_formats, ARRAY_SIZE(sun50i_a100_ledc_formats), format);
+	if (i < 0)
+		return dev_err_probe(dev, i, "Bad pixel format '%s'\n", format);
 
-	return dev_err_probe(dev, -EINVAL, "Bad pixel format '%s'\n", format);
+	priv->format = i;
+	return 0;
 }
 
 static void sun50i_a100_ledc_set_format(struct sun50i_a100_ledc *priv)
-- 
2.43.0.rc1.1336.g36b5255a03ac