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path: root/drivers/char/n_hdlc.c
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Diffstat (limited to 'drivers/char/n_hdlc.c')
-rw-r--r--drivers/char/n_hdlc.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/char/n_hdlc.c b/drivers/char/n_hdlc.c
index c68118efad84..47d32281032c 100644
--- a/drivers/char/n_hdlc.c
+++ b/drivers/char/n_hdlc.c
@@ -598,18 +598,18 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
return -EFAULT;
}
- lock_kernel();
+ tty_lock();
for (;;) {
if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) {
- unlock_kernel();
+ tty_unlock();
return -EIO;
}
n_hdlc = tty2n_hdlc (tty);
if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC ||
tty != n_hdlc->tty) {
- unlock_kernel();
+ tty_unlock();
return 0;
}
@@ -619,13 +619,13 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
/* no data */
if (file->f_flags & O_NONBLOCK) {
- unlock_kernel();
+ tty_unlock();
return -EAGAIN;
}
interruptible_sleep_on (&tty->read_wait);
if (signal_pending(current)) {
- unlock_kernel();
+ tty_unlock();
return -EINTR;
}
}
@@ -648,7 +648,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
kfree(rbuf);
else
n_hdlc_buf_put(&n_hdlc->rx_free_buf_list,rbuf);
- unlock_kernel();
+ tty_unlock();
return ret;
} /* end of n_hdlc_tty_read() */
@@ -691,7 +691,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
count = maxframe;
}
- lock_kernel();
+ tty_lock();
add_wait_queue(&tty->write_wait, &wait);
set_current_state(TASK_INTERRUPTIBLE);
@@ -731,7 +731,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
n_hdlc_buf_put(&n_hdlc->tx_buf_list,tbuf);
n_hdlc_send_frames(n_hdlc,tty);
}
- unlock_kernel();
+ tty_unlock();
return error;
} /* end of n_hdlc_tty_write() */