diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-24 22:10:47 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-24 22:10:47 +0400 |
| commit | b86b75ec57c381f32090a5bc61252f84f955c094 (patch) | |
| tree | 69afa8a88979bfa8fbdbcb106ddf8fe3ee5da99f /drivers/tty/n_tty.c | |
| parent | 351d6204bfc814a1aee300296d2f54460ffff172 (diff) | |
| parent | 413541dd66d51f791a0b169d9b9014e4f56be13c (diff) | |
| download | linux-b86b75ec57c381f32090a5bc61252f84f955c094.tar.xz | |
Merge 3.13-rc5 into tty-next
We need the tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_tty.c')
| -rw-r--r-- | drivers/tty/n_tty.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c index 961e6a996dff..cb8017aa4434 100644 --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -93,6 +93,7 @@ struct n_tty_data { size_t canon_head; size_t echo_head; size_t echo_commit; + size_t echo_mark; DECLARE_BITMAP(char_map, 256); /* private to n_tty_receive_overrun (single-threaded) */ @@ -338,6 +339,7 @@ static void reset_buffer_flags(struct n_tty_data *ldata) { ldata->read_head = ldata->canon_head = ldata->read_tail = 0; ldata->echo_head = ldata->echo_tail = ldata->echo_commit = 0; + ldata->echo_mark = 0; ldata->line_start = 0; ldata->erasing = 0; @@ -791,6 +793,7 @@ static void commit_echoes(struct tty_struct *tty) size_t head; head = ldata->echo_head; + ldata->echo_mark = head; old = ldata->echo_commit - ldata->echo_tail; /* Process committed echoes if the accumulated # of bytes @@ -815,10 +818,11 @@ static void process_echoes(struct tty_struct *tty) size_t echoed; if ((!L_ECHO(tty) && !L_ECHONL(tty)) || - ldata->echo_commit == ldata->echo_tail) + ldata->echo_mark == ldata->echo_tail) return; mutex_lock(&ldata->output_lock); + ldata->echo_commit = ldata->echo_mark; echoed = __process_echoes(tty); mutex_unlock(&ldata->output_lock); @@ -826,6 +830,7 @@ static void process_echoes(struct tty_struct *tty) tty->ops->flush_chars(tty); } +/* NB: echo_mark and echo_head should be equivalent here */ static void flush_echoes(struct tty_struct *tty) { struct n_tty_data *ldata = tty->disc_data; |