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path: root/drivers/char/specialix.c
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Diffstat (limited to 'drivers/char/specialix.c')
-rw-r--r--drivers/char/specialix.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/char/specialix.c b/drivers/char/specialix.c
index 2c24fcdc722a..9f8495b4fc8f 100644
--- a/drivers/char/specialix.c
+++ b/drivers/char/specialix.c
@@ -1365,7 +1365,9 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
retval = -ERESTARTSYS;
break;
}
+ tty_unlock();
schedule();
+ tty_lock();
}
set_current_state(TASK_RUNNING);
@@ -1863,8 +1865,7 @@ static int sx_set_serial_info(struct specialix_port *port,
return -EFAULT;
}
- lock_kernel();
-
+ mutex_lock(&port->port.mutex);
change_speed = ((port->port.flags & ASYNC_SPD_MASK) !=
(tmp.flags & ASYNC_SPD_MASK));
change_speed |= (tmp.custom_divisor != port->custom_divisor);
@@ -1875,7 +1876,7 @@ static int sx_set_serial_info(struct specialix_port *port,
((tmp.flags & ~ASYNC_USR_MASK) !=
(port->port.flags & ~ASYNC_USR_MASK))) {
func_exit();
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
return -EPERM;
}
port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
@@ -1892,7 +1893,7 @@ static int sx_set_serial_info(struct specialix_port *port,
sx_change_speed(bp, port);
func_exit();
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
return 0;
}
@@ -1906,7 +1907,7 @@ static int sx_get_serial_info(struct specialix_port *port,
func_enter();
memset(&tmp, 0, sizeof(tmp));
- lock_kernel();
+ mutex_lock(&port->port.mutex);
tmp.type = PORT_CIRRUS;
tmp.line = port - sx_port;
tmp.port = bp->base;
@@ -1917,7 +1918,7 @@ static int sx_get_serial_info(struct specialix_port *port,
tmp.closing_wait = port->port.closing_wait * HZ/100;
tmp.custom_divisor = port->custom_divisor;
tmp.xmit_fifo_size = CD186x_NFIFO;
- unlock_kernel();
+ mutex_unlock(&port->port.mutex);
if (copy_to_user(retinfo, &tmp, sizeof(tmp))) {
func_exit();
return -EFAULT;