修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/drivers/gpio/gpio-sa1100.c
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@@ -1,11 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * linux/arch/arm/mach-sa1100/gpio.c
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  *
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  * Generic SA-1100 GPIO handling
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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 version 2 as
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- * published by the Free Software Foundation.
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  */
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 #include <linux/gpio/driver.h>
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 #include <linux/init.h>
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@@ -56,7 +53,10 @@
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 {
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 	void __iomem *gpdr = sa1100_gpio_chip(chip)->membase + R_GPDR;
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-	return !(readl_relaxed(gpdr) & BIT(offset));
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+	if (readl_relaxed(gpdr) & BIT(offset))
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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 sa1100_direction_input(struct gpio_chip *chip, unsigned offset)