From 244b2c5ca8b14627e4a17755e5922221e121c771 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 09 Oct 2024 06:15:07 +0000
Subject: [PATCH] change system file

---
 kernel/drivers/leds/leds-mlxreg.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/leds/leds-mlxreg.c b/kernel/drivers/leds/leds-mlxreg.c
index 022e973..82aea1c 100644
--- a/kernel/drivers/leds/leds-mlxreg.c
+++ b/kernel/drivers/leds/leds-mlxreg.c
@@ -22,6 +22,7 @@
 #define MLXREG_LED_AMBER_SOLID		0x09 /* Solid amber */
 #define MLXREG_LED_BLINK_3HZ		167 /* ~167 msec off/on - HW support */
 #define MLXREG_LED_BLINK_6HZ		83 /* ~83 msec off/on - HW support */
+#define MLXREG_LED_CAPABILITY_CLEAR	GENMASK(31, 8) /* Clear mask */
 
 /**
  * struct mlxreg_led_data - led control data:
@@ -187,6 +188,7 @@
 	struct mlxreg_led_data *led_data;
 	struct led_classdev *led_cdev;
 	enum led_brightness brightness;
+	u32 regval;
 	int i;
 	int err;
 
@@ -196,6 +198,23 @@
 		if (!led_data)
 			return -ENOMEM;
 
+		if (data->capability) {
+			err = regmap_read(led_pdata->regmap, data->capability,
+					  &regval);
+			if (err) {
+				dev_err(&priv->pdev->dev, "Failed to query capability register\n");
+				return err;
+			}
+			if (!(regval & data->bit))
+				continue;
+			/*
+			 * Field "bit" can contain one capability bit in 0 byte
+			 * and offset bit in 1-3 bytes. Clear capability bit and
+			 * keep only offset bit.
+			 */
+			data->bit &= MLXREG_LED_CAPABILITY_CLEAR;
+		}
+
 		led_cdev = &led_data->led_cdev;
 		led_data->data_parent = priv;
 		if (strstr(data->label, "red") ||

--
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