disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/serial_8250.h
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@@ -7,7 +7,6 @@
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 #ifndef _LINUX_SERIAL_8250_H
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 #define _LINUX_SERIAL_8250_H
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-#include <linux/atomic.h>
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 #include <linux/serial_core.h>
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 #include <linux/serial_reg.h>
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 #include <linux/platform_device.h>
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@@ -126,8 +125,6 @@
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 #define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
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 	unsigned char		msr_saved_flags;
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-	atomic_t		console_printing;
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-
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 	struct uart_8250_dma	*dma;
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 	const struct uart_8250_ops *ops;
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@@ -183,8 +180,6 @@
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 void serial8250_set_defaults(struct uart_8250_port *up);
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 void serial8250_console_write(struct uart_8250_port *up, const char *s,
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 			      unsigned int count);
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-void serial8250_console_write_atomic(struct uart_8250_port *up, const char *s,
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-				     unsigned int count);
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 int serial8250_console_setup(struct uart_port *port, char *options, bool probe);
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 int serial8250_console_exit(struct uart_port *port);
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