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path: root/drivers/char/amiserial.c
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Diffstat (limited to 'drivers/char/amiserial.c')
-rw-r--r--drivers/char/amiserial.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 8ab75a43231b..a5f3956a5971 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -1505,8 +1505,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
rs_wait_until_sent(tty, info->timeout);
}
shutdown(info);
- if (tty->driver->flush_buffer)
- tty->driver->flush_buffer(tty);
+ rs_flush_buffer(tty);
tty_ldisc_flush(tty);
tty->closing = 0;
@@ -1539,6 +1538,8 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
return; /* Just in case.... */
orig_jiffies = jiffies;
+
+ lock_kernel();
/*
* Set the check interval to be 1/5 of the estimated time to
* send a single character, and make it at least 1. The check
@@ -1579,6 +1580,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
break;
}
__set_current_state(TASK_RUNNING);
+ unlock_kernel();
#ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
printk("lsr = %d (jiff=%lu)...done\n", lsr, jiffies);
#endif