add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/mfd/stmfx.c
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@@ -330,9 +330,8 @@
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 	stmfx->vdd = devm_regulator_get_optional(&client->dev, "vdd");
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 	ret = PTR_ERR_OR_ZERO(stmfx->vdd);
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 	if (ret) {
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-		if (ret == -ENODEV)
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-			stmfx->vdd = NULL;
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-		else
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+		stmfx->vdd = NULL;
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+		if (ret != -ENODEV)
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 			return dev_err_probe(&client->dev, ret, "Failed to get VDD regulator\n");
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 	}
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@@ -387,7 +386,7 @@
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 err:
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 	if (stmfx->vdd)
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-		return regulator_disable(stmfx->vdd);
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+		regulator_disable(stmfx->vdd);
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 	return ret;
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 }