add gpio led uart

hc

2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/drivers/hwmon/ltc2945.c
..
..
@@ -248,6 +248,8 @@
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 	/* convert to register value, then clamp and write result */
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 	regval = ltc2945_val_to_reg(dev, reg, val);
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+	if (regval < 0)
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+		return regval;
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 	if (is_power_reg(reg)) {
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 		regval = clamp_val(regval, 0, 0xffffff);
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 		regbuf[0] = regval >> 16;