修改GPIO导出默认初始值

hc

2024-10-16 50a212ec906f7524620675f0c57357691c26c81f

 kernel/drivers/gpio/gpio-74xx-mmio.c
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@@ -1,12 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * 74xx MMIO GPIO driver
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  *
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  *  Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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 #include <linux/err.h>
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@@ -81,7 +77,10 @@
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 {
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 	struct mmio_74xx_gpio_priv *priv = gpiochip_get_data(gc);
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-	return !(priv->flags & MMIO_74XX_DIR_OUT);
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+	if (priv->flags & MMIO_74XX_DIR_OUT)
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+		return GPIO_LINE_DIRECTION_OUT;
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+
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+	return  GPIO_LINE_DIRECTION_IN;
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 }
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 static int mmio_74xx_dir_in(struct gpio_chip *gc, unsigned int gpio)
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@@ -106,7 +105,6 @@
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 static int mmio_74xx_gpio_probe(struct platform_device *pdev)
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 {
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 	struct mmio_74xx_gpio_priv *priv;
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-	struct resource *res;
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 	void __iomem *dat;
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 	int err;
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@@ -116,8 +114,7 @@
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 	priv->flags = (uintptr_t)of_device_get_match_data(&pdev->dev);
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-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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-	dat = devm_ioremap_resource(&pdev->dev, res);
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+	dat = devm_platform_ioremap_resource(pdev, 0);
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 	if (IS_ERR(dat))
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 		return PTR_ERR(dat);
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