disable kernel build waring

hc

2024-05-10 093a6c67005148ae32a5c9e4553491b9f5c2457b

 kernel/include/linux/tty_flip.h
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@@ -12,7 +12,6 @@
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 extern int tty_prepare_flip_string(struct tty_port *port,
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 		unsigned char **chars, size_t size);
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 extern void tty_flip_buffer_push(struct tty_port *port);
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-void tty_schedule_flip(struct tty_port *port);
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 int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag);
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 static inline int tty_insert_flip_char(struct tty_port *port,
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@@ -40,4 +39,7 @@
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 extern void tty_buffer_lock_exclusive(struct tty_port *port);
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 extern void tty_buffer_unlock_exclusive(struct tty_port *port);
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+int tty_insert_flip_string_and_push_buffer(struct tty_port *port,
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+		const unsigned char *chars, size_t cnt);
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+
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 #endif /* _LINUX_TTY_FLIP_H */