TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation

Remove incorrect and redundant wait_until_sent operation, which waits
for the driver buffer rather than any hardware buffers to drain,
something which is already taken care of by the tty layer (and
chars_in_buffer).

Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/bfin_jtag_comm.c b/drivers/tty/bfin_jtag_comm.c
index d7b198c..ce24182 100644 (file)
--- a/drivers/tty/bfin_jtag_comm.c
+++ b/drivers/tty/bfin_jtag_comm.c
@@ -210,18 +210,6 @@ bfin_jc_chars_in_buffer(struct tty_struct *tty)
        return circ_cnt(&bfin_jc_write_buf);
 }
 
-static void
-bfin_jc_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-       unsigned long expire = jiffies + timeout;
-       while (!circ_empty(&bfin_jc_write_buf)) {
-               if (signal_pending(current))
-                       break;
-               if (time_after(jiffies, expire))
-                       break;
-       }
-}
-
 static const struct tty_operations bfin_jc_ops = {
        .open            = bfin_jc_open,
        .close           = bfin_jc_close,
@@ -230,7 +218,6 @@ static const struct tty_operations bfin_jc_ops = {
        .flush_chars     = bfin_jc_flush_chars,
        .write_room      = bfin_jc_write_room,
        .chars_in_buffer = bfin_jc_chars_in_buffer,
-       .wait_until_sent = bfin_jc_wait_until_sent,
 };
 
 static int __init bfin_jc_init(void)