add r8169 read mac form eeprom

hc

2024-02-19 1c055e55a242a33e574e48be530e06770a210dcd

 kernel/drivers/tty/serial/serial_mctrl_gpio.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0+
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+/* SPDX-License-Identifier: GPL-2.0+ */
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 /*
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  * Helpers for controlling modem lines via GPIO
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  *
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@@ -114,19 +114,19 @@
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 struct gpio_desc *mctrl_gpio_to_gpiod(struct mctrl_gpios *gpios,
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 				      enum mctrl_gpio_idx gidx)
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 {
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-	return ERR_PTR(-ENOSYS);
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+	return NULL;
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 }
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 static inline
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 struct mctrl_gpios *mctrl_gpio_init(struct uart_port *port, unsigned int idx)
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 {
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-	return ERR_PTR(-ENOSYS);
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+	return NULL;
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 }
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 static inline
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 struct mctrl_gpios *mctrl_gpio_init_noauto(struct device *dev, unsigned int idx)
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 {
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-	return ERR_PTR(-ENOSYS);
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+	return NULL;
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 }
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 static inline