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2832fc11f1
The USB drivers often want to insert a series of bytes all with the same flag set - provide a helper for this case. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
29 lines
1.1 KiB
C
29 lines
1.1 KiB
C
#ifndef _LINUX_TTY_FLIP_H
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#define _LINUX_TTY_FLIP_H
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extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
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extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
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extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
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extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
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extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
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void tty_schedule_flip(struct tty_struct *tty);
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static inline int tty_insert_flip_char(struct tty_struct *tty,
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unsigned char ch, char flag)
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{
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struct tty_buffer *tb = tty->buf.tail;
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if (tb && tb->used < tb->size) {
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tb->flag_buf_ptr[tb->used] = flag;
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tb->char_buf_ptr[tb->used++] = ch;
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return 1;
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}
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return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
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}
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static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
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{
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return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
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}
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#endif /* _LINUX_TTY_FLIP_H */
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