diff options
| author | Alan Cox | 2008-04-30 09:54:03 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2008-04-30 17:29:45 +0200 |
| commit | 76b25a5509bbafdbfc7d7d6b41a3c64947d59360 (patch) | |
| tree | 244786bdb849657dc9ab885c7ac2abb3eb4185d7 /drivers/char/esp.c | |
| parent | amiserial: Switch put char to return success/fail (diff) | |
| download | kernel-qcow2-linux-76b25a5509bbafdbfc7d7d6b41a3c64947d59360.tar.gz kernel-qcow2-linux-76b25a5509bbafdbfc7d7d6b41a3c64947d59360.tar.xz kernel-qcow2-linux-76b25a5509bbafdbfc7d7d6b41a3c64947d59360.zip | |
char: switch gs, cyclades and esp to return int for put_char
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/esp.c')
| -rw-r--r-- | drivers/char/esp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/char/esp.c b/drivers/char/esp.c index b1f92db31331..996d3230c929 100644 --- a/drivers/char/esp.c +++ b/drivers/char/esp.c @@ -1156,24 +1156,27 @@ static void change_speed(struct esp_struct *info) spin_unlock_irqrestore(&info->lock, flags); } -static void rs_put_char(struct tty_struct *tty, unsigned char ch) +static int rs_put_char(struct tty_struct *tty, unsigned char ch) { struct esp_struct *info = (struct esp_struct *)tty->driver_data; unsigned long flags; + int ret = 0; if (serial_paranoia_check(info, tty->name, "rs_put_char")) - return; + return 0; if (!info->xmit_buf) - return; + return 0; spin_lock_irqsave(&info->lock, flags); if (info->xmit_cnt < ESP_XMIT_SIZE - 1) { info->xmit_buf[info->xmit_head++] = ch; info->xmit_head &= ESP_XMIT_SIZE-1; info->xmit_cnt++; + ret = 1; } spin_unlock_irqrestore(&info->lock, flags); + return ret; } static void rs_flush_chars(struct tty_struct *tty) |