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
|
|
#define _LINUX_TTY_FLIP_H
|
|
|
|
extern int tty_buffer_request_room(struct tty_struct *tty, 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);
|
|
|
|
static inline int tty_insert_flip_char(struct tty_struct *tty,
|
|
unsigned char ch, char flag)
|
|
{
|
|
struct tty_buffer *tb = tty->buf.tail;
|
|
if (tb && tb->used < tb->size) {
|
|
tb->flag_buf_ptr[tb->used] = flag;
|
|
tb->char_buf_ptr[tb->used++] = ch;
|
|
return 1;
|
|
}
|
|
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 */
|