enable tun/tap/iptables

hc

2024-05-10 ee930fffee469d076998274a2ca55e13dc1efb67

 kernel/drivers/regulator/max8973-regulator.c
..
..
@@ -758,6 +758,7 @@
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 			gflags = GPIOD_OUT_HIGH;
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 		else
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 			gflags = GPIOD_OUT_LOW;
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+		gflags |= GPIOD_FLAGS_BIT_NONEXCLUSIVE;
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 		gpiod = devm_gpiod_get_optional(&client->dev,
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 						"maxim,enable",
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 						gflags);
..
..
@@ -807,7 +808,13 @@
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 	config.of_node = client->dev.of_node;
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 	config.regmap = max->regmap;
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-	/* Register the regulators */
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+	/*
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+	 * Register the regulators
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+	 * Turn the GPIO descriptor over to the regulator core for
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+	 * lifecycle management if we pass an ena_gpiod.
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+	 */
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+	if (config.ena_gpiod)
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+		devm_gpiod_unhinge(&client->dev, config.ena_gpiod);
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 	rdev = devm_regulator_register(&client->dev, &max->desc, &config);
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 	if (IS_ERR(rdev)) {
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 		ret = PTR_ERR(rdev);