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| author | Linux Build Service Account <lnxbuild@quicinc.com> | 2017-10-17 05:38:15 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2017-10-17 05:38:14 -0700 |
| commit | f2b5c20a20626247665b913b6ec6cb37de0bfa89 (patch) | |
| tree | 3e214059d460cbd3861557c3b43a567d49632785 /drivers/tty/tty_buffer.c | |
| parent | 6d08baec3167417c0950132dc231a7ae8e2bc283 (diff) | |
| parent | fda1654df897b537f5d33bda92ef7435b68c606f (diff) | |
Merge "Merge android-4.4@d68ba9f (v4.4.89) into msm-4.4"
Diffstat (limited to 'drivers/tty/tty_buffer.c')
| -rw-r--r-- | drivers/tty/tty_buffer.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index fb31eecb708d..8f3566cde3eb 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -362,6 +362,32 @@ int tty_insert_flip_string_flags(struct tty_port *port, EXPORT_SYMBOL(tty_insert_flip_string_flags); /** + * __tty_insert_flip_char - Add one character to the tty buffer + * @port: tty port + * @ch: character + * @flag: flag byte + * + * Queue a single byte to the tty buffering, with an optional flag. + * This is the slow path of tty_insert_flip_char. + */ +int __tty_insert_flip_char(struct tty_port *port, unsigned char ch, char flag) +{ + struct tty_buffer *tb; + int flags = (flag == TTY_NORMAL) ? TTYB_NORMAL : 0; + + if (!__tty_buffer_request_room(port, 1, flags)) + return 0; + + tb = port->buf.tail; + if (~tb->flags & TTYB_NORMAL) + *flag_buf_ptr(tb, tb->used) = flag; + *char_buf_ptr(tb, tb->used++) = ch; + + return 1; +} +EXPORT_SYMBOL(__tty_insert_flip_char); + +/** * tty_schedule_flip - push characters to ldisc * @port: tty port to push from * |