add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pinctrl/pinctrl-axp209.c
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@@ -1,13 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * AXP20x pinctrl and GPIO driver
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  *
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  * Copyright (C) 2016 Maxime Ripard <maxime.ripard@free-electrons.com>
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  * Copyright (C) 2017 Quentin Schulz <quentin.schulz@free-electrons.com>
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under  the terms of the GNU General  Public License as published by the
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- * Free Software Foundation;  either version 2 of the License, or (at your
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- * option) any later version.
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  */
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 #include <linux/bitops.h>
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@@ -153,13 +149,16 @@
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 	 * going to change the value soon anyway. Default to output.
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 	 */
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 	if ((val & AXP20X_GPIO_FUNCTIONS) > 2)
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-		return 0;
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+		return GPIO_LINE_DIRECTION_OUT;
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 	/*
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 	 * The GPIO directions are the three lowest values.
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 	 * 2 is input, 0 and 1 are output
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 	 */
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-	return val & 2;
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+	if (val & 2)
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+		return GPIO_LINE_DIRECTION_IN;
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+
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+	return GPIO_LINE_DIRECTION_OUT;
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 }
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 static int axp20x_gpio_output(struct gpio_chip *chip, unsigned int offset,
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@@ -366,6 +365,8 @@
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 		pctl->funcs[i].groups = devm_kcalloc(&pdev->dev,
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 						     npins, sizeof(char *),
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 						     GFP_KERNEL);
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+		if (!pctl->funcs[i].groups)
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+			return -ENOMEM;
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 		for (pin = 0; pin < npins; pin++)
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 			pctl->funcs[i].groups[pin] = pctl->desc->pins[pin].name;
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 	}