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path: root/drivers/char/synclink_gt.c
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Diffstat (limited to 'drivers/char/synclink_gt.c')
-rw-r--r--drivers/char/synclink_gt.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 6473ae0..1a11717 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -771,8 +771,7 @@ static void close(struct tty_struct *tty, struct file *filp)
if (info->flags & ASYNC_INITIALIZED)
wait_until_sent(tty, info->timeout);
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ flush_buffer(tty);
tty_ldisc_flush(tty);
shutdown(info);
@@ -967,6 +966,8 @@ static void wait_until_sent(struct tty_struct *tty, int timeout)
* Note: use tight timings here to satisfy the NIST-PCTS.
*/
+ lock_kernel();
+
if (info->params.data_rate) {
char_time = info->timeout/(32 * 5);
if (!char_time)
@@ -984,6 +985,7 @@ static void wait_until_sent(struct tty_struct *tty, int timeout)
if (timeout && time_after(jiffies, orig_jiffies + timeout))
break;
}
+ unlock_kernel();
exit:
DBGINFO(("%s wait_until_sent exit\n", info->device_name));
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