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USB: tty: Add a function to insert a string of characters with the same flag

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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>
This commit is contained in:
Alan Cox 2010-02-18 16:43:54 +00:00 • committed by Greg Kroah-Hartman
parent e4a3d94658
commit 2832fc11f1
2 changed files with 12 additions and 6 deletions
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7
include/linux/tty_flip.h
View file

@ -2,8 +2,8 @@
#define _LINUX_TTY_FLIP_H
extern int tty_buffer_request_room(struct tty_struct *tty, size_t size);
extern int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size);
extern int tty_insert_flip_string_flags(struct tty_struct *tty, const unsigned char *chars, const char *flags, size_t size);
extern int tty_insert_flip_string_fixed_flag(struct tty_struct *tty, const unsigned char *chars, char flag, size_t size);
extern int tty_prepare_flip_string(struct tty_struct *tty, unsigned char **chars, size_t size);
extern int tty_prepare_flip_string_flags(struct tty_struct *tty, unsigned char **chars, char **flags, size_t size);
void tty_schedule_flip(struct tty_struct *tty);
@ -20,4 +20,9 @@ static inline int tty_insert_flip_char(struct tty_struct *tty,
return tty_insert_flip_string_flags(tty, &ch, &flag, 1);
}
static inline int tty_insert_flip_string(struct tty_struct *tty, const unsigned char *chars, size_t size)
{
return tty_insert_flip_string_fixed_flag(tty, chars, TTY_NORMAL, size);
}
#endif /* _LINUX_TTY_FLIP_H */